Preparation of Brain Acetone Powder Extraction of Brain Actin from Acetone Powder Preparation of Muscle Acetone Powder Extraction of Muscle Actin from the Acetone Powder Preparation of Skeletal Muscle Myosin Preparation of Gizzard Myosin Preparation of Myosin II Heavy Meromyosin and Light Meromyosin Preparation of Myosin II S1 and Rod Preparation of Gizzard Alpha-actin and Vinculin Preparation of Thymus Alpha-Actinin Preparation of Brain Profilin and Profilin-Actin Complexes Preparation of Brain Calmodulin Preparation of Brain Tubulin Preparation of Cellular Fibronectin Preparation of Dialysis Tubing Drop Freezing