the most characteristic of these alterations are : ( a ) an abnormal number of nuclear heterochromatin clumps , ( b ) the presence of numerous cytoplasmic vacuoles and various sized lipid droplets , ( c ) elaborate interdigitations and junctions between adjacent cells , and ( d ) the presence of anomalous ectoplasmic specializations disposed perpendicularly to the sertoli cell membrane .
C0010834
cytoplasmic
C0007603
cell membrane