THE ULTRASTRUCTURE OF STRIATED MUSCLE AT VARIOUS SARCOMERE LENGTHS
1. Rest and equilibrium length muscle sarcomeres are composed of thin filaments (actin) which traverse the sarcomeres from the Z membranes up to the H band; at this level the filaments are considerably thicker and less numerous. 2. Shortening of muscle is associated with a transformation of thin into thick filaments in the A band. 3. These observations are discussed in terms of interaction of actin and myosin to form a supercoiled structure as the basis of contraction.
1968 ◽
Vol 37
(1)
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pp. 105-116
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Keyword(s):
1977 ◽
Vol 75
(2)
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pp. 366-380
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Keyword(s):
2020 ◽
2010 ◽
Vol 2010
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pp. 1-14
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2007 ◽
Vol 365
(2)
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pp. 325-332
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1970 ◽
Vol 47
(1)
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pp. 183-196
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Keyword(s):
1964 ◽
Vol 160
(981)
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pp. 442-448
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1967 ◽
Vol 50
(6)
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pp. 157-169
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Keyword(s):
1969 ◽
Vol 42
(3)
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pp. 683-694
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