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  • Title: Muscle cell cultures from chicken breast muscle have increased specific activities of creatine kinase when incubated at 41 degrees C compared with 37 degrees C.
    Author: Bennett VD, Cowles E, Husic HD, Suelter CH.
    Journal: Exp Cell Res; 1986 May; 164(1):63-70. PubMed ID: 3956598.
    Abstract:
    Chicken muscle cell cultures were incubated at 41 degrees C, the physiological chicken body temperature, and compared with cultures incubated at 37 degrees C, the typical cell culture incubation temperature. The cultures incubated at 41 degrees C show not only an increase in creatine kinase (CK)-specific activity but also a marked increase in the percentage of adult muscle CK isozyme (MM-CK) in 7-day muscle cultures. Muscle cell cultures incubated in the presence of cytosine arabinoside (ara-C), a cell proliferation inhibitor, do not have the mononucleated cell overgrowth seen at 41 degrees C and thus exhibit a further increase in creatine kinase-specific activity compared with cultures incubated at 41 degrees C in the absence of ara-C. These results suggest that muscle cell cultures incubated at 41 degrees C are more highly differentiated than those incubated at 37 degrees C.
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