Typhoid is caused by bacteria called Salmonella typhi.

Unchecked proliferation of cell type present in the epithelium is called carcinoma.

Most abundant type of immunoglobulin present in human is lgG .

The vector of malaria is female anopheles mosquito.

When cells are infected by a virus, they produce small amounts of anti microbial proteins called interferons that increase the resistance of neighbouring cells to infection by the same or other viruses. Interferon is a cytokine barrier.

Streptococcus pneumoniae causes pneumonia.

HIV which causes AIDS mainly attacks helper T cells.

IgA immunoglobulin protects mucosal surfaces; prevents attachment of pathogens to epithelial cells.

Cocaine is a stimulant.

Thymus is a primary lymphoid organ.

Anti histamin relieves allergy.

When cells are infected by a virus, they produce small amounts of antimicrobial proteins.These are called interferon.

Morphine is obtained from Papaver somniferum.

The redness and heat of inflammation in the infected or injured area is due to the release of histamin.

AIDS is not an autoimmune disorder. It is a viral disease.

Monoclonal antibodies are antibodies produced by hybridoma technique.

The spread of cancerous cells to distant sites is called metastasis.

The genetic material in HIV is single-stranded RNA.

Grafting of tissue or organ between individuals of different species is called xenograft.

Unchecked proliferation of cell types present in blood and their precursors in the bone marrow is called leukemia.

Immunogically important endocrine gland is thymus.

Lysozyme is an enzyme that kills bacteria and is present in perspiration, tear, saliva etc.

The longest portion of a bacterial flagellum is Filament.

The malignant growth of epithelial tissue that covers the body organs is called carcinoma.    

Widal test is commonly used for detection of typhoid.   

Hemoglobin is a protein not a carcbohydrate.

The confirmatory test used to diagnose AIDS is Western Blot test.

Pili are commonly found in Gram -ve bacteria. Pili project from the surfaces of some groups of bacteria, these thread like structures help bacteria adhere to one another during mating as well as to animal cells for protection and food.