Development of fiber types in human fetal muscle. An immunocytochemical study.
Human fetal muscles have been studied using immunocytochemical methods with antibodies directed against different myosin isoforms. We show that fiber type differences can be detected as early as 15-16 weeks of gestation. At this time it would appear that both the heavy and light chains characteristic of slow myosin are found in some myotubes.
D000251:Adenosine Triphosphatases / Q000378:metabolism; D006801:Humans; D007124:Immunoenzyme Techniques; D009132:Muscles / Q000166:cytology / Q000196:embryology* / Q000378:metabolism; D009218:Myosins / Q000378:metabolism*
D000251:Adenosine Triphosphatases; D009218:Myosins