Which of the following is a cell fragment?

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(A) Blood platelets (thrombocytes) occur only in mammals. They are non-nucleated and colourless cell fragments. They are produced by the fragmentation

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Blood platelets

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(A) Blood platelets (thrombocytes) occur only in mammals. They are non-nucleated and colourless cell fragments. They are produced by the fragmentation of large cells called megakaryocytes found in the red bone marrow. Because they are not complete cells but fragments of cytoplasm derived from megakaryocytes,they are referred to as cell fragments. They play a crucial role in the process of blood clotting by releasing thromboplastin.

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