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Human Health and Disease — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
Explain the difference between cell Mediated Immunity and Humoral Mediated Immunity.
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Answer

Differences between Cell Mediated Immunity and Humoral Mediated Immunity :
S.No.Cell Mediated ImmunityHumoral Mediated Immunity
1T-cells are responsible for mediated immunityB-lymphocyte cells are responsible for fluid or circulatory mediated immunity.
2These cells secrete substances that dissolve the cell membrane of the target cells and destroy them by creating holes in it.For different substances that enter, there are different B-lymphocytes which do the work of destroying.
3Lymphokines, regulatory proteins, are released from activated lymphocytes.Specific antibodies are produced to destroy a specific type of invading organism or toxin.
4These regulatory proteins or lymphokines eat the cells of macrophages, increasing their number and aggregation ability. As a result of which the infected cells are destroyed.This antibody circulates in the blood, lymph and tissue fluid and destroys disease causing organisms or toxins.
5It protects against diseases like tuberculosis, cancer, leprosy etc.It protects from diseases like tetanus, cold, smallpox, measles cholera etc.

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