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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
![(A) Bronchopneumonia with localized pattern. (B) Lobar pneumonia with a diffuse pattern within the l](https://biology-forums.com/gallery/47/medium_14755_05_10_12_4_11_18_9269446.jpeg)
![Grace Service, a YMCA missionary, explained that these porters worked at the base of Mount Omei in S](https://biology-forums.com/gallery/47/medium_6_02_03_16_7_45_23_234082405.jpeg)