the hypothesis that schwann cell mitochondria and granular endoplasmic reticulum are involved in the production and storage of proteins for the plasma membrane of this cell as well as the hypothesis that these organelles are involved in the production and storage of protein metabolites which are subsequently transferred to the related axons seem applicable not only to schwann cells associated with myelinated axons ( pannese et al. , in press ) , but also to those associated with unmyelinated ones .
C0230779
granular endoplasmic reticulum
C0007634
cell