BOSTON — So-called “organs on a chip” — small blobs of tissue growing in lab dishes that mimic the function of their human counterparts — have promise for basic science and drug development. And those ...

Both usually produce few young at one time, and ensure their survival by caring for them. Unlike mammals, birds lay eggs and initial stages of development occur outside the mother’s body. Reproductive ...

Male and female reproductive systems allow human reproduction. Fertilisation occurs when a sperm and egg join to form an embryo. An embryo develops into an unborn baby in the uterus during pregnancy.

A researcher has found new evidence that the plastic additive BPA can disrupt women's reproductive systems, causing chromosome damage, miscarriages and birth defects. Scientists report seeing ...

BOSTON — So-called “organs on a chip” — small blobs of tissue growing in lab dishes that mimic the function of their human counterparts — have promise for basic science and drug development. And those ...

The humans use sexual mode of reproduction. The reproductive systems in human beings become functional or start functioning at a definite age called puberty. In complex multicellular organisms like ...