An artificially produced isotope of the element Yttrium. The isotope is radioactive and emits beta rays which are utilized for...

A genus of bacteria which includes the causative organism of plague, Yersinia pestis. It also includes Yersinia enterocolitica, an uncommon...

A culture done on cells of vaginal/cervical fluid to detect the presence of yeast infection (candidiasis).  

Embryonic membranous tissue that produces the first red blood cell of the embryo. The membranous sac, composed of mesoderm lined...

A rigid, plastic-tipped device used to aspirate secretions from the mouth and throat.  

Narrow duct that connects the yolk sac and mid area of the embryonic gut during early development, usually disappearing in...

Membranous sac that develops in the early embryo, providing part of the primitive gut, a site of blood cell formation,...

Nutritive material, rich in protein and fats, found within the ovum to supply nourishment for the developing embryo. It is...

Species infecting many animals, especially rodents, and an epidemic risk in small animal houses. Yersinia pseudotuberculosis is the only motile...

An elementary school for children of the Orthodox Jewish faith; also, an advanced school where Jewish students study the Talmud...