Monoclonal antibodies:
a. Are produced by hybridomas
b. Are secreted by clone cells
c. Can be used for passive immunization
d. All of the above

Verified step by step guidance

Step 1: Understand what monoclonal antibodies are. They are identical antibodies produced by a single clone of cells, which means they are uniform in structure and antigen specificity.

Step 2: Recognize that monoclonal antibodies are produced by hybridomas, which are cells created by fusing a specific antibody-producing B cell with a myeloma (cancer) cell to allow continuous growth and antibody production.

Step 3: Know that these antibodies are secreted by the clone cells (the hybridoma cells), which continuously produce the same antibody.

Step 4: Understand the application of monoclonal antibodies in passive immunization, where pre-formed antibodies are given to an individual to provide immediate protection against a pathogen or toxin.

Step 5: Conclude that since all the statements (a, b, and c) are true, the correct answer is 'd. All of the above.'

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Hybridomas

Hybridomas are laboratory-engineered cells created by fusing a specific antibody-producing B cell with a myeloma (cancer) cell. This fusion allows the hybridoma to both produce a single type of antibody and proliferate indefinitely, enabling large-scale production of monoclonal antibodies.

Clonal Selection and Antibody Secretion

Monoclonal antibodies are secreted by clone cells derived from a single parent B cell, ensuring all antibodies are identical and specific to one epitope. This clonal nature is essential for the specificity and uniformity of monoclonal antibody preparations.

Passive Immunization

Passive immunization involves the direct transfer of antibodies to an individual to provide immediate protection against pathogens. Monoclonal antibodies can be used therapeutically in this way, offering targeted immunity without the need for the recipient's immune system to generate a response.

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