[Nerve fibers of blood vessels found in the adventitia of a venule and the agranulated vesicles in human retina].
D003594:Cytoplasmic Granules; D006801:Humans; D007223:Infant; D008297:Male; D008854:Microscopy, Electron; D012171:Retinal Vessels / Q000166:cytology* / Q000294:innervation*; D014680:Veins / Q000166:cytology / Q000294:innervation