number of fetuses with external malformations to total number of live fetuses ratio +
number of fetuses with skeletal malformations to total number of fetuses ratio +
number of fetuses with visceral malformations to total number of fetuses ratio +
offspring measurement +
semen measurement +
sperm measurement +
Any measurement of a mature male gamete or germ cell that consists of a cylindrical nucleated cell with a short neck and a thin motile tail, contains genetic information to be transmitted by the male, exhibits autokinesia, and is able to effect zygosis with an ovum.