|
|
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
![Microscopic photo taken by Opportunity showing a gray hematite concretion, indicative of the past pr](https://biology-forums.com/gallery/47/medium_12359_30_06_12_4_45_58.jpeg)
![Socrates thrived on the intellectual life of the agora (the marketplace), where he could be sure to ...](https://biology-forums.com/gallery/47/medium_623834_08_12_16_11_51_13_242521642.jpeg)