--%>
Assignment Help - homework help

How can an organism immunized against future infections

How can an organism which once underwent contact with an antigen be immunized against the future infections by similar agent?

E

Expert

Verified

This phenomenon is termed as immune memory. Whenever an antigen makes contact for the initial time with cells of humoral immune system, B lymphocytes which are producers of particular immunoglobulins against that antigen multiply and in days manufacture their antibodies. This is termed as primary response. Some of such specific B lymphocytes remain in the circulation for a big time, sometimes throughout the whole life of the individual, and they become the memory cells of immune system. Whenever the body is exposed in the future to similar antigen the production of antibodies will be quicker and more intense as the immune system is already made to react against that antigen. This is termed as the secondary response.

   Related Questions in Biology

  • Q : What is Frame Relay Frame Relay :

    Frame Relay: Telecommunications technology which breaks data stream into small data packets termed as frames, to give transmission speeds of 64 kilo bits per thousand (Kbps) to 2.4 giga bits per second (Gbps) at fairly lower costs. The Frame-relay equ

    		•
  • Q : Are mollusk metameric living beings Are

    Are mollusk metameric living beings? Completely analyzing this aspect could it be said that molluscs are evolutionarily proximal to the nematodes or to the annelids?

    		•
  • Q : Role of flagellum of sperm cell Specify

    Specify the role of flagellum of the sperm cell? How is it generated?

    		•
  • Q : Ploidy reduction-meiosis division

    Throughout which meiosis division does ploidy reduction take palce? Does ploidy reduction take place in mitosis?

    		•
  • Q : Antagonism between sympathetic and

    What is the antagonism between sympathetic and parasympathetic neural actions?

    		•
  • Q : Effect of below the market-clearing

    Assume the supply curve for a good is completely inelastic. If the government imposed a price ceiling below the market-clearing level, would deadweight loss result? Describe.While the supply curve is completely inelastic, the imposition of an

    		•
  • Q : How neural impulse is transmitted from

    Describe the structure via which the neural impulse is transmitted from one cell to the other? Also name their parts?

    		•
  • Q : Digestion in cnidarians What is the

    What is the kind of digestion which takes place in cnidarians?

    		•
  • Q : Plan of Implementation-Six Sigma Plan

    Plan of Implementation: Increasingly operations have become more complex all over the world. This is a result of more use of technology all over the world. With this increased use of technology in operations, the records of work are more important. Th

    		•
  • Q : Valve separating the compartments

    Specify the first heart chamber in which the blood enters? Where does blood go after passing that particular chamber? What is the name of valve which separates the compartments? Why is that valve essential?

    		•