Im pretty sure its the genus
Histamines are chemicals released by the body as an allergic response.They help the body by reacting when their are "intruders" so when enters, histamine acts as a messenger and sends out a signal for the body to create a reaction helping to get rid of teh intruder through some type of reaction.
In Spirogyra and allied forms the chloroplast<span> grows as the cell grows, and only divides when this divides.</span><span>
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