|
|
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
![Symbolic language may have helped reinforce exclusive sexual relationships within social groups in l](https://biology-forums.com/gallery/47/medium_273688_23_02_15_7_07_21_20847395.jpeg)
![A William Jennings Bryan poster alludes to religion: “no crown of thorns” and no “cross of gold.” Br](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_16_36_2244824.jpeg)