| McKee's line | A line drawn from the tip of the cartilage of the eleventh rib to a point 3.5 cm medial to the anterior superior spine, then curved downward, forward, and inward to just above the deep inguinal ring; a guide to the common iliac artery. (05 Mar 2000) |
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| McKee, George Kenneth | <person> British orthopedic surgeon, *1930. See: McKee's line. (05 Mar 2000) |
| McLean, Malcolm | <person> U.S. Obstetrician, 1848-1924. See: Tucker-McLean forceps. (05 Mar 2000) |
| MCMI | <abbreviation> Millon clinical multiaxial inventory. (05 Mar 2000) |
| McMurray test | Rotation of the tibia on the femur to determine injury to meniscal structures. (05 Mar 2000) |
| McMurray, Thomas | <person> British surgeon, *1889. See: McMurray test. (05 Mar 2000) |
| mcn-a-343 | <chemical> A drug that selectively activates certain subclasses of muscarinic receptors and also activates postganglionic nicotinic receptors. It is commonly used experimentally to distinguish muscarinic receptor subtypes. Pharmacological action: ganglionic stimulants, muscarinic agonist, nicotinic agonists. Chemical name: 2-Butyn-1-aminium, 4-((((3-chlorophenyl)amino)carbonyl)oxy)-N,N,N-trimethyl-, chloride (12 Dec 1998) |
| McNemar's test | A form of chi-square test for matched paired data. (05 Mar 2000) |
| MCP-1 | <abbreviation> Monocyte chemoattractant protein-1. (05 Mar 2000) |
| mcpa | <chemical> 4-chloro-2-methylphenoxyacetic acid. A powerful herbicide used as a selective weed killer. Pharmacological action: herbicides. Chemical name: Acetic acid, (4-chloro-2-methylphenoxy)- (12 Dec 1998) |
| McPhail test | A test for progesterone and like substances; immature female rabbits are treated with 150 IU of estrone over a period of 6 days; the test material is then given in five daily subcutaneous doses; progestational proliferation of the endometrium is noted and the results estimated according to a scale from 0 to ++++; the amount required to produce an average (++) response is taken as a unit, equivalent to 0.25 mg of progesterone. (05 Mar 2000) |
| McPhail, M | <person> Canadian physiologist, *1907. See: McPhail test. (05 Mar 2000) |
| MCPs | Methyl accepting chemotaxis proteins. Proteins of the inner cytoplasmic face of the bacterial plasma membane with which the receptors of the outer face interact. Four different MCPs are known in E. Coli, each with a separate set of receptors. Can be methylated at various sites, methylation is part of the adaptation to the signal. Although important intermediate signal integration sites, they are not directly connected to the motor. (18 Nov 1997) |
| MCR | <abbreviation> Steroid metabolic clearance rate. (05 Mar 2000) |
| McRoberts manoeuvre | Manoeuvre to reduce a foetal shoulder dystocia by flexion of the maternal hips. (05 Mar 2000) |