Pain of labor felt in lower back.
Breakdown product of pigment formed in the liver from hemoglobin during the destruction of red blood cells.
Method of evaluating a fetus before birth.
Removal of a small piece of tissue for microscopic study.
One of the cells an egg divides into after it has been fertilized.
Small amount of vaginal bleeding late in pregnancy; often precedes labor.
Irregular, painless tightening of uterus during pregnancy.