Category: P

A radioactive element of the rare earth series; atomic weight 144.9128; atomic number 61.  

The stage of mitosis in which the nuclear membrane disintegrates, and the chromosomes move toward the equator of the cell.  

A cell of the erythrocyte series preceding the megaloblast.  

A cell intermediate between a lymphoblast and lymphocyte.  

An enzyme that is found in animal tissues and yeast and that hydrolyzes proline peptides to simpler peptide and proline.  

Premature expulsion of a loop of umbilical cord into the cervical or vaginal canal dining labor before engagement of the presenting part, a potentially life-threatening event that occurs in about 2 of 1000 births. The greatest danger of cord prolapse is neonatal asphyxia and death.  

Protrusion of the pelvic organs into or through the vaginal canal. This condition is usually due to direct or indirect damage to the vagina and its pelvic support system. The damage may be related to stretching or laceration of the vaginal wall, hypoestrogenic atrophy, or injury to the nerves of the pelvic support structures.  

Protrusion of the iris through an injury in the cornea.  

A class of vegetable proteins found in seeds and cereal grains (e.g., wheat, rye, barley, and com) that contain high levels of glutamic acid.  

A class of proteins that stimulate intestinal muscles to contract.