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Question
The injection of serum of horse which has been repeatedly injected by cobra venom into a person bitten by cobra results in
The injection of serum of horse which has been repeatedly injected by cobra venom into a person bitten by cobra results in
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Solution
The correct option is D Passive immunity
When the cobra venom is injected into a horse, it results in the production of antibodies against the venom in the horse. Now, when the serum of this horse (which contains the antibodies against the venom) is injected into a person bitten by the cobra, the person will not be affected much by the venom. This is the form of passive immunity. Passive immunity is the transfer of active humoral immunity in the form of ready-made antibodies, from one individual to another. It is generally used when there is a high risk of infection and insufficient time for the body to develop its own immune response, or to reduce the symptoms of the ongoing disease (here, the bite by the cobra).
Thus, the correct answer is the option (A), 'Passive immunity'.
When the cobra venom is injected into a horse, it results in the production of antibodies against the venom in the horse. Now, when the serum of this horse (which contains the antibodies against the venom) is injected into a person bitten by the cobra, the person will not be affected much by the venom. This is the form of passive immunity. Passive immunity is the transfer of active humoral immunity in the form of ready-made antibodies, from one individual to another. It is generally used when there is a high risk of infection and insufficient time for the body to develop its own immune response, or to reduce the symptoms of the ongoing disease (here, the bite by the cobra).
Thus, the correct answer is the option (A), 'Passive immunity'.
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