When was actin first extracted from muscle?
D000199:Actins / Q000737:chemistry* / Q000302:isolation & purification; D000255:Adenosine Triphosphate / Q000737:chemistry; D000818:Animals; D049711:History, Modern 1601-; D009132:Muscles / Q000737:chemistry*
D000199:Actins; D000255:Adenosine Triphosphate