An antigen factor, dependent on the Y-chromosome, responsible for differentiating the human embryo into the male phenotype by inducing the embryonic gonad to develop into a testis.
A Brief History Of The Letter HThough it’s a high-value letter in Scrabble and Words with Friends, H is a relatively common letter. Statistically speaking, it is the eighth most commonly used letter in the English language. That’s because H is usually paired with other consonants like wh, ch, sh, and gh. H is found in the most common two-letter pair (th) and in the most common three-letter combination (the). (The letter …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.