Interferons are synthesized in response to
(a) mycoplasma
(b) bacteria
(c) viruses
(d) fungi.
Answer:(c) viruses
Interferons (IFNs) are a group of signaling proteins made and released by host cells in response to the presence of several pathogens, such as viruses.Interferons are named for their ability to "interfere" with viral replication by protecting cells from virus infections.IFNs also have various other functions: they activate immune cells, such as natural killer cells and macrophages; they increase host defenses by up-regulating antigen presentation by virtue of increasing the expression of major histocompatibility complex (MHC) antigens.
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