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Polyclonal antibodies (pAbs) are antibodies that are secreted by different B cell lineages within the body (whereas monoclonal antibodies come from a single cell lineage). They are a collection of immunoglobulin molecules that react against a specific antigen , each identifying a different epitope .
He is a true translational investigator, since he used these monoclonal antibodies to classify human B-cell leukemia and lymphomas as well as to create therapeutic agents for patients. . . More importantly, he was the first in the world to administer a monoclonal antibody to a human (a patient with B-cell lymphoma)." [11]
In immunology, antiserum is a blood serum containing antibodies (either monoclonal or polyclonal) that is used to spread passive immunity to many diseases via blood donation (plasmapheresis). For example, convalescent serum , passive antibody transfusion from a previous human survivor, used to be the only known effective treatment for ebola ...
In contrast to polyclonal antibodies, which are mixtures of many different antibody molecules, the monoclonal antibodies produced by each hybridoma line are all chemically identical. The production of monoclonal antibodies was invented by César Milstein and Georges J. F. Köhler in 1975.
Hence the term "polyclonal", which derives from the words poly, meaning many, and clones from Greek klōn, meaning sprout or twig; [3] [4] [5] a clone is a group of cells arising from a common "mother" cell. The antibodies thus produced in a polyclonal response are known as polyclonal antibodies.
Monoclonal antibody: a single hybridoma cell, which by chance includes the appropriate V(D)J recombination to produce the desired antibody, is cloned to produce a large population of identical cells. In informal laboratory jargon, the monoclonal antibodies isolated from cell culture supernatants of these hybridoma clones (hybridoma lines) are ...
Clonality implies the state of a cell or a substance being derived from one source or the other. Thus there are terms like polyclonal—derived from many clones; oligoclonal [2] —derived from a few clones; and monoclonal—derived from one clone. These terms are most commonly used in context of antibodies or immunocytes.
A general representation of the production of monoclonal antibodies. Monoclonal antibodies are manufactured ex vivo from a single B lymphocyte. Serum from immunized animals or humans is first extracted and purified to collect B lymphocytes from the spleen, which are then fused with plasma cell myeloma.