- Daily Sperm Count [CMO:0000645] — The total number of sperm, i.e. mature male germ cells, produced by an individual in a 24 hour period.
- Daily Sperm Count to Epididymis Weight Ratio [CMO:0001611] — A calculated measurement in which the total number of sperm, i.e. mature male germ cells, produced by an individual in a 24 hour period, is divided by the weight, i.e., the heaviness, of the epididymis, the coiled, elongated, cordlike structure located along the posterior border of the testis which provides for storage, transit, and maturation of spermatozoa. The result of this division is presented as a ratio, fraction, quotient or percentage, thus normalizing sperm count to the size of the epididymis and, by extension, to the size of the organism.
- Darcy Permeability [CMO:0003749] — This measurement defines the capacity of a porous material to transmit fluids. Darcy's law is an equation that describes the flow of a fluid through a porous medium. The calculation in biological systems relies on a pressure gradient, the thickness of the material through which the fluid is proceeding, and the dynamic viscosity of the filtration solution.
- Debris Zone Thickness [CMO:0003787] — Measurement of the thickness of a buildup of an autofluorescent layer containing the nonphagocytosed photoreceptor outer segment (POS) debris in the subretinal space of subjects with retinal disease. The debris zone is located between the outer nuclear layer (ONL) and the retinal pigmented epithelium (RPE).
- Decrease in Blood Ethanol Level to Body Weight Ratio Per Unit Time [CMO:0001773] — A calculated measurement of the rate at which the amount of alcohol in the blood divided by body weight (i.e. heaviness) decreases over time, that is, blood alcohol amount divided by body weight divided by the specified period of time. Ethanol is the colorless, volatile, flammable liquid, CH3CH2OH, produced by yeast fermentation of carbohydrates or synthesized by hydration of ethylene. Blood is the fluid that circulates through the heart, arteries, capillaries and veins carrying nutrients and oxygen to the body tissues and metabolites away from them.
- Defecation Measurement [CMO:0000997] — Any measurement related to the elimination of wastes and undigested food, as feces, from the rectum.
- Defecation Rate [CMO:0000998] — This is a measurement of the number of instances of defecation, or amount of defecation as measured by the number of pieces of fecal matter, or the weight of fecal matter within a specified period of time.
- Defecation Rate By Count [CMO:0004018] — Measurement of the number of boli of fecal matter excreted within a specified period of time determined by counting the number of individual pellets deposited by the experimental subject.
- Defecation Rate By Mass [CMO:0003943] — This is a measurement of the weight of fecal matter excreted within a specified period of time.
- Defensive Burying Duration [CMO:0001961] — Measurement of the total length of experiment time that an animal spends in the activity of defensive burying.
- Defensive Burying Measurement [CMO:0001959] — Any measurement of the action of defensive burying, the typical rodent behavior of displacing bedding material with vigorous treading-like movements of their forepaws and shoveling movements of their heads directed towards a noxious stimulus that appears to pose a near and immediate threat.
- Dermis Ribonucleic Acid Level [CMO:0003931] — This is any measurement of the absolute or relative amount(s) of one or more of the ribonucleic acids (RNAs) found in dermis, a layer of skin between the epidermis (with which it makes up the skin) and subcutaneous tissues. Dermis is composed of two layers, the papillary and reticular dermis.
- Developed Blood Pressure [CMO:0000010] — A calculated value for the difference between the systolic blood pressure and the diastolic blood pressure at a given point in time when measured in an isolated organ or vessel under conditions where perfusion pressure or flow can be controlled.
- Diabetes Mellitus Incidence/prevalence Measurement [CMO:0001113] — Any measurement which expresses either the total number of cases of diabetes mellitus in a population at a given point in time or the rate of occurrence of new cases of diabetes mellitus, that is, the proportion of the population which develop the condition within a period of time.
- Diabetes Mellitus Onset/diagnosis Measurement [CMO:0001111] — Any measurement which expresses a quantity related to the beginning, early stages or development of diabetes mellitus, or to the official determination of diabetes mellitus as the cause of the observed symptom(s). Diabetes mellitus is a chronic syndrome of impaired carbohydrate, protein, and fat metabolism owing to insufficient secretion of insulin or to target tissue insulin resistance and resulting in hyperglycemia due to decreased glucose tolerance.
- Diaphragm Ribonucleic Acid Composition Measurement [CMO:0003308] —
- Diaphragm Weight [CMO:0000464] — Weight of the diaphragm, the muscle separating the thoracic and abdominal cavities.
- Diastolic Blood Pressure [CMO:0000005] — The minimum arterial pressure within the cardiac cycle, usually at the point at which the heart is in a state of relaxation and expansion. This is the time when the ventricles fill with blood.
- Diastolic Blood Pressure Variability [CMO:0002810] —
- Diencephalon Ribonucleic Acid Composition Measurement [CMO:0003318] —
- Difference Between Time of Physical Contact/close Proximity of Test Subject and Social Stimulus During Sample Phase and Test Phase [CMO:0002678] — The difference in time spent in direct social interaction (that is, the amount of time within a specified period during which a test subject touches or voluntarily moves or remains close to, for example within one centimeter of, a social stimulus such as another animal of the same species) between the first introduction of a social stimulus and a subsequent reintroduction of the same stimulus.
- Disease Incidence/prevalence Measurement [CMO:0000926] — Any measurement in which the number of individuals in a study population that display a disease at a point in time or develop a disease within a determined period of time are compared to the total number of individuals in the study population. Often expressed as a percentage but could be expressed as a ratio.
- Disease Onset/diagnosis Measurement [CMO:0001108] — Any measurement which expresses a quantity related to the beginning, early stages or development of a disease, or to the official determination of a disease as the cause of the observed symptom(s).
- Disease Population Measurement [CMO:0001149] — Any measurement which deals with a disease in terms of population, geography or demographics.
- Disease Process Measurement [CMO:0001107] — Any measurement that deals with the process or development of a disease state, for example, the onset, progression or severity of the disease or its symptoms.
- Disease Progression Measurement [CMO:0001110] — Any measurement related to the course of a disease, for example, a series of stages or a succession of states in the disease process.
- Disease Severity Measurement [CMO:0001109] — Any measurement of the degree to which the presentation of a disease state has caused pain or damage, established one or more lesions or infectious colonies, and/or taken over or interfered with the normal functioning of the body as a whole, or of one or more organs, tissues, cells or subcellular mechanisms of an organism.
- Distal Forelimb Circumference [CMO:0000187] —
- Distal Gut Ribonucleic Acid Composition Measurement [CMO:0003344] —
- Distal Hind Limb Circumference [CMO:0000186] — The linear distance around the lower portion of the hind limb, i.e. the segment of the hind limb farthest from the body.
- Distance Moved Per Unit of Time Into, out of or Within A Discrete Space in An Experimental Apparatus [CMO:0001493] — Measurement of the linear equivalent of the extent of forward progress attained via the movement of an individual during a specified period of time into, out of or within a distinct and specified area of an experimental apparatus when such movement originated and/or was undertaken, controlled, or accomplished as a result of free will or choice.
- Distance Run on Treadmill [CMO:0001405] — A measurement of the linear equivalent of the extent of forward progress attained while running on a treadmill, a piece of equipment consisting of a continuously moving belt which allows the action of walking or running without the entire body moving forward.
- Dopaminergic Neuron Count [CMO:0002699] — Measurement of the number of dopamine-producing neurons in a specified sample. Dopamine is a monoamine neurotransmitter formed in the brain by the decarboxylation of dopa and essential to the normal functioning of the central nervous system. A reduction in its concentration within the brain is associated with Parkinson's disease.
- Dorsal Root Ganglion Ribonucleic Acid Level [CMO:0003926] — This is any measurement of the absolute or relative amount(s) of one or more of the ribonucleic acids (RNAs) of which the tissue of the dorsal root ganglion is formed or composed.
- Dorsal Thalamus Ribonucleic Acid Composition Measurement [CMO:0003300] —
- Dose of Irradiation That is Fatal to 50% of the Total Study Population [CMO:0003665] — The amount of x-radiation that is sufficient to kill 50 percent of a population within a certain time frame.
- Dose of Methacholine at Which Pulmonary Conductance is Half Its Pretreatment Value [CMO:0000713] — The administered quantity of methacholine, a quaternary ammonium ion in which the nitrogen is substituted with three methyl groups and a 2-acetoxypropyl group and which acts as a parasympathomimetic bronchoconstrictor, at which the ability of the repiratory tract to allow airflow during breathing (inspration and expiration) is half its value in an untreated subject, or at which the resistance of the respiratory tract to airflow is doubled.
- Dose of Whole Thorax Lung Irradiation That Causes 50% of the Total Study Population to Have Lung Dysfunction [CMO:0003666] — The amount of x-radiation that is sufficient to cause 50 percent of a population to have lung dysfunction (measurable as increased breathing rate or other parameter) within a certain time frame.
- Drink Calorie Intake Level to Body Weight Ratio [CMO:0002328] — A calculated measurement in which the number of calories (usually large calories, kilogram calories, dietary calories, or nutritional calories) consumed as drink by an organism during a specified period of time or under specified conditions, is divided by the total weight of the body of the organism, and the result presented as a ratio, fraction, quotient or percentage.
- Drink Calorie Intake Level to Change in Body Weight Ratio [CMO:0002327] — A calculated measurement in which the number of calories (usually large calories, kilogram calories, dietary calories, or nutritional calories) consumed as drink by an organism during a specified period of time or under specified conditions, is divided by corresponding difference in body weight during that same period of time or under the same conditions, and the result presented as a ratio, fraction, quotient or percentage.
- Drink Calorie Intake Measurement [CMO:0002249] — Any measurement of the calories (usually large calories, kilogram calories, dietary calories, or nutritional calories) consumed as drink by an organism. A large calorie is the amount of energy needed to raise the temperature of one kilogram of water by one degree Celsius, a measure of the energy which an organism can derive by metabolizing the drink.
- Drink Calorie Intake Rate [CMO:0002250] — The number of drink-derived calories consumed by an organism per unit time.
- Drink Intake Duration [CMO:0000454] — Total amount of time spent consuming liquids during a specified period of time.
- Drink Intake Measurement [CMO:0000771] — The quantification of any parameter related to the process whereby drink, any liquid that is brought into the mouth and swallowed to quench thirst, for nourishment, etc., is taken in for utilization by the body.
- Drink Intake Rate [CMO:0000455] — Amount of drink, that is, a liquid that is brought into the mouth and swallowed to quench thirst, for nourishment, etc., consumed per unit time.
- Drink Intake Volume [CMO:0000773] — Measurement of the size of the three dimensional space occupied by the amount of drink, that is, a liquid that is brought into the mouth and swallowed to quench thirst, for nourishment, etc., consumed in a specified period of time.
- Drink Intake Weight [CMO:0001762] — Measurement of the weight or heaviness of the drink, that is, the liquid that is brought into the mouth and swallowed to quench thirst, for nourishment, etc., consumed in a specified period of time.
- Dry Feces Weight [CMO:0003937] — This is a measure of the relative mass of a sample of fecal matter. The weight of an object is the force acting on the object due to acceleration or gravity.
- Dry Matter Intake [CMO:0001313] — Amount of feed consumed, excluding water content, over a specific period of time.
- Duodenal Region Pancreatic Beta Cell Weight Calculated as the Product of Pancreas Duodenal Region Weight and Corresponding Beta Cell Fractional Area [CMO:0001820] — A calculated measurement in which the weight, that is, the heaviness or the force with which a body is drawn toward earth by gravity, of the beta cells in the head region of the pancreas is derived by multiplying the weight of the entire head region of the pancreas by this fraction: [average cross-sectional area of pancreatic islet beta cells in the head region divided by average cross-sectional area of the head region of the pancreas]. The head region of the pancreas is the portion of the pancreas which lies closest to the duodenum, the first segment of the small intestine. The pancreas is the elongated, racemose gland containing both endocrine and exocrine elements which secretes hormones such as insulin and glucagon internally and digestive enzymes externally. A pancreatic islet is a small encapsulated region of the pancreas containing endocrine (i.e., hormone-producing) cells. An islet beta cell is a membrane-enclosed protoplasmic mass constituting the smallest structural unit of an organism that is capable of independent functioning, which is found in a pancreatic islet and produces the hormones insulin and amylin. Area is the value representing the size of the two-dimensional extent of an object.
- Dura Mater Ribonucleic Acid Composition Measurement [CMO:0003302] —
- Duration of Lower Body Licking Events [CMO:0003088] — A measurement of the time subjects spend licking the abdomen during a period of time.
- Duration of Contractions Above 10 MmHg of Anorectal Pressure [CMO:0003763] — Measurement of the time from start to finish of a sphincter contraction causing anorectal pressure above 10 mmHg, calculated from a set of measurements taken from multiple contractions during a designated period of time.
- Duration of Grooming in A Discrete Space in An Experimental Apparatus [CMO:0001750] — The total amount of time that the animal spends in a distinct and specified area of an experimental apparatus cleaning itself or cleaning another animal. An experimental apparatus is a piece of technical equipment or machinery, an appliance, or a device designed for a particular purpose.
- Duration of Grooming in An Experimental Apparatus [CMO:0001749] — The total amount of time during an experiment in which an animal is maintained in a piece of technical equipment or machinery, or in an appliance or device designed for a particular purpose, that the animal spends cleaning itself or cleaning another animal.
- Duration of Loss of Righting Reflex [CMO:0002289] — The amount of time between the time point at which a subject loses the ability to assume an optimal position when there has been a departure from it and the time point at which the subject again demonstrates that ability.
Data returned: 56 terms all with first letter "D".
Data updated: Sep 01, 2024