CHONDRINE is a variety of gelatin.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
Cartilage was considered to be composed of a substance chondrigen, which gave chondrin or cartilage-glue on boiling with water.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5" by Various
It may contain mucin, chondrin, or gelatin, and may be infiltrated with calcareous salts.
"A System of Practical Medicine by American Authors, Vol. I" by Various