Antigenic determinant sites bind to which portion of an antibody molecule?
(1) Light chain
(2) Heavy chain
(3) Intermediate chains
(4) Plasma cells
Anti venom against snake poison contains:
Formation of antibodies within our body is called:
Antibodies are produced by:
Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). When an antigen binds to the B-cell surface, it stimulates the B cell to divide and mature into a group of identical cells called a clone.
B cells, also known as B lymphocytes are a type of white blood cell of the lymphocyte subtype. They function in the humoral immunity component of the adaptive immune system by secreting antibodies. B-cells bind to an antigen, receive help from a cognate helper T cell and differentiate into a plasma cell that secretes large amounts of antibodies.
Japanese encephalitis is transmitted by
The sporozoites that cause infection, when a female Anopheles mosquito bites a person, are formed in
Sporozoites enter the female Anopheles mosquito when they bite an infected person where these sporozoite fertilise and multiply in the stomach wall of the female Anopheles and stored in the salivary gland of mosquito till it is again transferred to the human body by a mosquito bite.
After entering the human body the sporozoites reach the liver cells, where they multiply. This is followed by their attack on red blood cells resulting in their rupture. The ruptured RBCs release a toxin called haemozoin, which is responsible for high recurring fever, chills and shivering.
The organisms which cause diseases in plants and animals are called:
Microorganisms that cause disease are collectively called pathogens.
Pathogens cause disease either by disrupting the body's normal processes and/or stimulating the immune system to produce a defensive response, resulting in high fever, inflammation and other symptoms.
Human Immunodeficiency Virus causes aids by attacking a type of white blood cell called
HIV progressively destroys certain types of white blood cells called CD4+ lymphocytes. Lymphocytes help defend the body against foreign cells, infectious organisms, and cancer. Thus, when HIV destroys CD4+ lymphocytes, people become susceptible to attack by many other infectious organisms.
Which of the following vaccines are injected at the age of 1&½ , 2&½ , 3& ½ Months?
The baby is given the following vaccines from the first month to the third month:
Which of the following is the unit of immune system?
Both sickle cell anaemia and Huntington’s chorea are:
Both sickle cell anaemia and Huntington's chorea are congenital genetic disorders. Sickle cell anaemia was first opened by James Herrick (1904). In this disease the patient's haemoglobin level reduced to half of the normal and the RBCs become sickle shaped. A single mutation in a gene can cause sickle cell anaemia.
Huntington's chorea is caused by autosomal mutation which is dominant. The gene is present on chromosome number 4.
Immuno-deficiency syndrome could develop due to
Acquired Immune Deficiency Syndrome or AIDS is a set of symptoms caused by the HIV virus. It is in fact, the most advanced stage of infection caused by HIV. This disease modifies and corrupts the immune system, making people susceptible to infections and diseases. The susceptibility worsens as the syndrome progresses.
The function of IgE is
The chemical test that is used for diagnosis of typhoid is:
The disease chikungunya is transmitted by
Mosquitoes become infected when they feed on a person already infected with the virus. Infected Mosquitoes can then spread the virus to other people through bites. Chikungunya virus is most often spread to people by Aedes aegypti and Aedes albopictus mosquitoes. These are the same mosquitoes that transmit dengue virus.