the mononuclear cell type found in close contact with the antibody-sensitized target cells had the following morphological criteria : 8 to 10 mu diameter , irregular nucleus , discrete rough endoplasmic reticulum , isolated ribosomes , cytoplasmic organelles concentrated under a ruffling membrane in the contact area with the tumor cell .
C0230779
rough endoplasmic reticulum
C0035553
ribosomes