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The antigen-antibody immunological reaction is used to be regarded as typical of immunological responses. Antibodies are proteins synthesized by specialized cells called plasma cells, which are formed by lymphocytes (cells from the lymph system) when an antigen, a substance foreign to an organism's body, comes in contact with lymphocytes. Two important manifestations of antigen-antibody immunity are lysis, the rapid physical rupture of antigenic cells and the liberation of their contents into the surrounding medium, and phagocytosis, a process in which antigenic particles are engulfed by and very often digested by macrophages and polymorphs. The process of lysis is executed by a complex and unstable blood constituent known as complement, which will not work unless it is activated by a specific antibody; the process of phagocytosis is greatly facilitated when the particles to be engulfed are coated by a specific antibody directed against them.

One of the two important manifestations of antigen-antibody immunity is lysis while the other is

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Improvement

If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four andindicate it by selecting the appropriate option.

The employee did not _____ to the argument of the manager.

Identify a type of asexual reproduction which involves reproduction through parts of a plant such as roots, stem and leaves?

Osteoporosis is the disease related to

Which one of the following is not an assumption in the law of demand?

The relation between the consumer’s optimal choice of the quantity of a good and its price is very important and this relation is called the ________ function.