Choose all the characteristics that are true about "active immunity."
> It protects the body against a new infection thanks to antibodies developed by the host during the first exposure to the antigen.
> It requires several days to develop.
> It can last for a relatively long time, sometimes for life.
> Active immunity can be stimulated only by artificial means.
It protects the body against a new infection thanks to antibodies developed by the host during the first exposure to the antigen.
It requires several days to develop.
It can last for a relatively long time, sometimes for life.
> It protects the body against a new infection thanks to antibodies developed by the host during the first exposure to the antigen.
> It requires several days to develop.
> It can last for a relatively long time, sometimes for life.
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Trichophyton schoenleinii causes a condition that is characterized by the formation of yellowish cup-shaped crusts or scutulae, considerable scarring of the scalp, and sometimes permanent alo-pecia. This organism is usually recovered in _____ days
a. 5 to 7 b. 14 c. 21 d. 30
The muscle and bone tissues of adults are derived from the embryonic tissue layer called the ________
Fill in the blank(s) with correct word
Identify and briefly describe the labeled structures in the cross section of the vertebrate embryo.
What will be an ideal response?
What other enzyme is the Cas9 enzyme most similar to?
A) DNA polymerase B) DNA ligase C) a restriction enzyme D) reverse transcriptase