pregnanetriol

[ prĕg′nān-trīôl ]

n.

A urinary metabolite of 17-alpha-hydroxyprogesterone and a precursor in the biosynthesis of cortisol; its excretion increases in certain diseases of the adrenal cortex and following administration of corticotropin.

QUIZZES

IS YOUR DESERT PLANT KNOWLEDGE SUCCULENT OR DRIED UP?

Cactus aficionados, don't get left in the dust with this quiz on desert plants. Find out if you have the knowledge to survive this prickly foray into the desert!
Question 1 of 7
This tall, horizontally branched cactus is probably the most recognizable cactus in Arizona. What is it called?
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.