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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 passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

And then, a few glorious minutes ______________, it was time to reluctantly head ashore. ____________ time, the strokes were more fluid, the movements more relaxed. I turned back one last time ____________ hello to a clown fish, the reason why I came to the Andamans. As I watched, it played hide-and-seek _________ a sea anemone, before frisking away. Suddenly, I realised a kinship with the blue waters ___________ the Bay of Bengal.

____________ time, the strokes were more fluid

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.

__________ says that if we keep increasing the employment of an input, with other inputs fixed, eventually a point will be reached after which the resulting addition to output (i.e., marginal product of that input) will start falling.

As per RBI In October 2017, Gross Non-Performing Assets (GNPA) ratio for NBFCs increased to what percentage till March 2017?

Sensitivity of potentiometer can be increased by