According to family, twin, and adoption studies, a person is at greatest risk for developing schizophrenia if he or she has a(n) __________ diagnosed with the disorder.

The white blood cells of the immune system are designed to recognize antigens, such as flu viruses, and then destroy them

Indicate whether this statement is true or false.

Medical researchers are focusing on the toxins of cone snails for several novel treatments because of the toxin's effects on:

A) Sodium ion channels B) Potassium ion channels C) Neurotransmitter receptors D) All of the above