Ask unlimited questions for free
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
For a complete list of videos, visit our video library