Z chromosome
A sex chromosome in certain animals, such as chickens, turkeys, and moths. In humans, males are XY and females XX, but in animals with a Z chromosome, males are ZZ and females are WZ.
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- Macrovascular
Pertaining to the macrovasculature, the portion of the vasculature of the body comprising the larger vessels, those with an internal diameter of more than 100 microns. By contrast to microvascular. The term macrovascular is somewhat less used than microvascular. There is a field of microvascular surgery. Macrovacular surgery is usually simply called vascular surgery.
- MCTD
Abbreviation standing for mixed connective tissue disease.
- MCV
Abbreviation for mean cell volume, the average volume of a red blood cell. This is a calculated value derived from the hematocrit and the red cell count (The hematocrit is the ratio of the volume of red cells to the volume of whole blood while the red cell count is the number of red blood […]
- MD
Abbreviation for the Latin Medicinae Doctor, Doctor of Medicine.