Ask unlimited questions for free
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.
For a complete list of videos, visit our video library