under conditions that should avoid formation of ice crystals , the structure of actin fibres was as expected on the basis of previous studies , i.e . a tangle of independent uniform filaments about 7 nm thick , using similar conditions , the cytoplasmic filaments of ptk-1 cells were equally distinct and evenly thick along their length and were usually associated with particles about 10 nm thick .
C0010851
filaments
C0007634
the