each glial plug exhibits two distinct regions : ramifying processes extend into the extracellular space and contain numerous pigment granules , while proximally the cytoplasm is devoid of granules but packed with bundles of cross-linked microfilaments that bind the fluorescent f-actin probe nbd-phallacidin strongly and antibodies to scallop actin weakly .
C0025979
microfilaments
C0001271
actin