the possibility that the lattice structure is an artifact of specimen preparation has been tested by ( a ) subjecting whole cultured cells ( wi-38 , nrk , chick embryo fibroblasts ) to various chemical ( aldehydes , osmium tetroxide ) and nonchemical ( freezing ) fixation schedules , ( b ) examination of model systems ( erythrocytes , protein solutions ) , ( c ) substantiating the relaibility of critical-point drying , and ( d ) comparing images of whole cells with conventionally prepared ( plastic-embedded ) cells .
C0016030
fibroblasts
C0007634
cells