in 11 monoclonal b-cell lesions , both the 1-micrometer plastic sections examined by light microscopy and the electron micrographs disclosed immature cells , with more dispersed nuclear chromatin , prominent nucleoli , abundant cytoplasmic polyribosomes , and increased numbers of mitochondria and strands of endoplasmic reticulum particularly in plasmacytoid lesions ) .
C0010834
cytoplasmic
C0026237
mitochondria