Soluble and Transmembrane Forms
The presence of both soluble and transmembrane SCF is required for normal hematopoietic function. Mice that produce the soluble SCF but not transmembrane SCF suffer from anemia, are sterile, and lack pigmentation. This suggests that transmembrane SCF plays a special role in vivo that is separate from that of soluble SCF.
Read more about this topic: Stem Cell Factor
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