Platelets (thrombocytes): These mobile parts are shaped from items of cells present in the bone marrow referred to as megakaryocytes. The common myeloid progenitor can differentiate into possibly RBC or WBC, or platelets, as well as prevalent lymphoid progenitor can differentiate into lymphocytes. The length necessary for your formation https://www.youtube.com/watch?v=buIHtQY7fCU