What is the essential difference in response of these two cell types when antigen binds to these surface immunoglobulins
What will be an ideal response?
(i) The immunoglobulin on a mast cell is an IgE antibody that has become bound to the mast cell's FcεRI receptor, whereas the immunoglobulin on a B cell is a transmembrane form made by the cell itself. (ii) A B cell might have any class of immunoglobulin on its surface, whereas mast cells have only IgE. (iii) IgE molecules of many different antigen specificities can be bound to the surface of an individual mast cell, whereas an individual B cell carries immunoglobulin molecules of only one specificity.After binding to antigen, mast cells become operational as effector cells without the need to undergo proliferation or differentiation. In contrast, after antigen binds to a surface immunoglobulin on a B cell, the cell must proliferate and differentiate to produce effector cells (antibody-secreting plasma cells).
You might also like to view...
Which of the following statements regarding the nervous system is NOT true?
A) All portions of the nervous system are composed of nervous tissue. B) Motor nerves carry commands to muscles and glands. C) Cranial and spinal nerves are part of the central nervous system. D) Sensory nerves carry information to the central nervous system.
Which of the following abbreviations is a type of cancer?
a. HD b. HIV c. PCP d. SCIDS
Complementary and ________ medicine are health practices and traditions that are not typically part of conventional Western medicine
A) supportive B) nonconventional C) herbal D) alternative
Which one of the following signs and symptoms is characteristic of a coral snake bite?
A) purplish discoloration around the bite B) blurred vision and drooping eyelids C) severe pain and swelling around the bitten area D) two distinct fang marks