a small blood vessel with red blood cells in neurofibroma tissue sample, light micrograph

erythrocyte red blood cell photomicrograph neurofibromatosis microscope genetic disorder cellular structure medical condition microscopy histology neurofibromas tissue examination disease diagnosis scientific research histopathology nf1 nf2 nerve tumors abnormalities pathology microscopic view healthcare health micrograph light sample slide biopsy neurofibroma schwann cells fibroblast spindle shaped stroma myxoid nuclei vessel vein capillary