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The specific immune (defense mechanisms) response can be broadly classified into two types:
a) Cell mediated immune response: This is achieved through large number of activated lymphocytes that are specially designed to destroy foreign agents e.g. the T lymphocytes produced by the thymus.
b) Humoral immune response: The body develops circulating antibodies which are globulin molecules that are capable of attacking the invading agents. B lymphocytes are produced by lymphoid tissue.
what is allometry?
Q. Explain the use of Benzoates acid? Benzoic acid, sodium benzoate and the parahydroxy esters (parabens) are used as preservatives. Benzoic acid and its sodium salt, sodium be
Gastrulation Process - Formation of Primitive Streak Gastrulation in all amniotes involving eutherian mammals is related to a characteristic structure termed as the primitive
Explain the types of double beam systems? Following are types of double beam systems: a) Dual beam in space type b) Dual beam in time type In type (a) separate detecto
All or None Response A very weak stimulus does not result in an action potential. The stimulus must have a certain strength to evoke an excitation. This is the threshold value
Weight of Plants - Quantitative Characters Weight is one of the most important quantitative characteristics of plants. Quantitatively growth is best measured on the basis of d
What is the role of Naupliar eye? The unique eye found in larval stage of the crustacean life cycle. This single compound eye is located medially, and with exception of copepod
The cell membrane is a slim semi-permeable membrane which surroundings the cytoplasm of a cell. Membrane function is to defend the integrity of the interior of the cell by allowing
Hormon e . The chief cells of the parathyroids secrete a hormone called parathyroid hormone (PTH) or parathormone or also called Collip's hormone after the name of its discove
Increase in population size is known as population growth. It depends upon number of persons added to the population and number of persons lost from the population. Addition in pop
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