HIV crossed from chimps to humans in the 1920's in what is now the Democratic Republic of Congo. This was probably as a result of chimps carrying the Simian Immunodeficiency Virus (SIV), a virus closely related to HIV, being hunted and eaten by people living in the area.
Senses are first. Then they relay information through nerves.
Answer:
The definition and answer to the question is following;
Stratum basale is the deepest/innermost layer of the epidermis. Histologically, the stratum basale is a single layer of cuboidal keratinocytes that directly abut and attach to the dermis.
The two main functions of the stratum basale are as follows;
1) proliferation
2) attachment of the epidermis to the dermis.
Answer:
More than 50 million Americans
<em>not sure if this is what you are looking for! but hope it helps.</em>
