Yamada E
Okajimas Folia Anat Jpn. 1989 Oct;66(4):211-21. doi: 10.2535/ofaj1936.66.4_211.
The myelinated perikaryon was found in some of the retinal ganglion cells of parrakeet. The cells were covered with a compact myelin composed of 1-10 lamellae. The myelin of the ganglion cells seems to be formed by Müller cell.