Answer:a
Explanation:
because there is special use for it
Answer:
I think it is Transduction
Explanation:
Transduction is the process by which foreign DNA is introduced into a cell by a virus or viral vector. An example is the viral transfer of DNA from one bacterium to another and hence an example of horizontal gene transfer.
Endocytosis and exocytosis of substances
In the _PNS_, the cells responsible for insulating neurons with myelin are called _Schwann cells_, whereas in the _CNS_, the cells responsible for insulating neurons are called _Oligodendrocytes_.
