title: Arrays of particles in the sarcolemma of the distal accessory flexor muscle of the lobster.
abstract: Freeze-fracture of the distal accessory flexor muscle reveals the presence of randomly distributed arrays of P- and E-face particles. The particles are arranged in regularly spaced rows which parallel one another and, in general, the long axis of the muscle fiber. P- and E-face arrays differ in their structure and are apparently complementary. A model explaining the apparent interrelationship of the P- and E-face arrays is presented. The functional significance of the arrays is not known.
mesh_terms: D000818:Animals; D005614:Freeze Fracturing; D008854:Microscopy, Electron; D008954:Models, Biological; D008121:Nephropidae / Q000648:ultrastructure*; D012508:Sarcolemma / Q000648:ultrastructure*