| MFR | mean flow rate; mucus flow rate |
|---|---|
| MHR | major histocompatibility region; malignant hyperthermia resistance; maternal heart rate; maximal hea... |
| MMFR | maximum midexpiratory flow rate; maximal midflow rate |
| MMR | mass miniature radiography; masseter muscle rigidity; maternal mortality rate; measles-mumps-rubella... |
| MPR | mannose 6-phosphate receptor; marrow production rate; massive preretinal retraction; maximum pulse r... |
| law of specific nerve energies | Each type of sensory nerve ending, however stimulated (electrically, mechanically, etc.), gives rise to its own specific sensation; moreover, each type of sensation depends not upon any special character of the different nerves but upon the part of the brain in which their fibres terminate. Synonym: law of specific nerve energies. (05 Mar 2000) |
|---|---|
| lymphocyte specific protein tyrosine kinase p56(lck) | <enzyme> This enzyme is a lymphoid specific src family tyrosine kinase that is critical for T-cell development and activation. Lck is associated with the cytoplasmic domains of CD4, CD8 and the beta-chain of the il-2 receptor, and is thought to be involved in the earliest steps of tcr-mediated T-cell activation. Registry number: EC 2.7.11.- (12 Dec 1998) |
| abortion rate | The number of abortions per 1000 terminated pregnancies during a given period of time. (05 Mar 2000) |
| attack rate | A cumulative incidence rate used for particular groups observed for limited periods under special circumstances, such as during an epidemic. (05 Mar 2000) |
| average flow rate | <physiology> The flow rate determined by dividing the total volume passed in a time period divided by the time period, usually quoted in mls per minute. (05 Mar 2000) |
| backup rate | A utility charge for providing occasional electricity service to replace on-site generation. (05 Dec 1998) |
| basal metabolic rate | <biochemistry, biology> The metabolic rate as measured under basal conditions: 12 hours after eating, after a restful sleep, no exercise or activity preceding test, elimination of emotional excitement and occurring in a comfortable temperature. Acronym: BMR (15 Nov 1997) |
| baseline foetal heart rate | <paediatrics> The average heart rate for a particular foetus during the diastolic phase of uterine contractions. (05 Mar 2000) |
| baseline variability of foetal heart rate | The beat-to-beat changes in foetal heart rate as recorded on a graph. (05 Mar 2000) |
| basic reproductive rate, ratio | <epidemiology> See Reproductive Ratio. (05 Dec 1998) |
| birth rate | The birth rate is usually given as the number of live births divided by the average population (or the population at midyear). This is termed the crude birth rate. In 1995, for example, the crude birth rate per 1,000 population was 14 in the United States, 16.9 in Australia, etc. (12 Dec 1998) |
| breathing rate | <chest medicine, clinical sign> Also referred to as the respiratory rate. Measured as the number of breaths taken every minute. Normal resting adult respiratory rates are from 16-20 breaths per minute. The normal 1 year old infant can have a respiratory rate of 30 breaths per minute. Count the breaths taken in 30 seconds observing the rise and fall of the chest and then multiply this number by 2. (27 Sep 1997) |
| rate | The number of occurrences in one minute (for example respiratory rate, heart rate) (27 Sep 1997) |
| rate, basal metabolic | A measure of the rate of metabolism. For example, someone with an overly active thyroid will have an elevated basal metabolic rate. (12 Dec 1998) |
| rate, birth | The birth rate is usually given as the number of live births divided by the average population (or the population at midyear). This is termed the crude birth rate. In 1995, for example, the crude birth rate per 1,000 population was 14 in the united states, 16.9 in Australia, etc. (12 Dec 1998) |