The old worn out $RBCs$ are filtered out by
Kidney
Liver
Spleen
Heart
What are the two corollaries related to immune system ?
Assertion : Interferons are effective against viruses.
Reason : Proteins which can be synthesized only by genetic engineering are effective against viruses.
$R.B.C.$ in adult are formed
Antibodies are produced by
Many microbial pathogens enter the gut of humans along with food. What are the preventive barriers to protect the body from such pathogens ? What type of immunity do you observe in this case ?