In case of platelets, progenitor cells differentiate into megakaryocytes, which are responsible for creating platelets.

在小板的生成过程，细胞会分化成巨核细胞；由巨核细胞来小板。

When it binds, those cells activate the JAK2 gene which makes them divide and mature into megakaryocytes and platelets.

当结合后，细胞激活JAK2，使这些细胞分化、成熟，变为巨核细胞和小板。

Platelets. The blood platelets are actually cell fragments rather than complete cells. Platelets are formed in the bone marrow from giant multinucleated cells called megakaryocytes.

小板。小板实际上是细胞碎片而不是完整的细胞。小板在骨髓形成，来自于被称为巨核细胞的巨大的多核的细胞。