question_answer 31)

  The substance produced by a cell in viral infection that can protect other cells from further infection is (a) serotonin                      (b) colostrum                     (c) interferon                     (d) histamine

Answer:

                  (c) The cytokine-barriers include interferons. These are the proteins secreted, by virus infected cells, which protect non-infected cells from further viral infection. Serotonin It is a neurotransmitter that leads to depression. Colostrum It is present in the lactating mother's breast milk, contains antibodies which protect the newborn against disease HistamineHistamine is also a neurotransmitter involved in inflammatory response.