How much an infant cries is largely steered by their genetics, and there is probably not much that parents can do about it.

Differentially expressed clones from subtracted cDNA libraries of a pair of monozygotic twins discordant for schizophrenia have been reported in the literature. The clones were expressed in ...

Genesis or experience? A unique study of more than 11,000 pairs of identical twins sheds new light on the role of our genes in our emotions. Reacting differently to the same situation? A matter of ...

We present a case of monozygotic twins who are discordant for breast cancer and chemotherapy exposure (ie, one twin contracted breast cancer and underwent chemotherapy, and the other had no breast ...