FINE-STRUCTURE AND AUTORADIOGRAPHY OF RETINAL CONE OUTER SEGMENTS IN GOLDFISH AND CARP

  • 1 January 1980
    • journal article
    • research article
    • Vol. 19  (7) , 707-719
Abstract
Cone but not rod outer segments (OS) in the retinas of goldfish and carp are diffusely labeled after intravitreal injection of 3H-fucose. Among the different cone types, the OS are heavily labeled in the long double, short single and some long single cones. The OS of short double and the remaining long single cones are consistently more lightly labeled. A correlation exists between heavy labeling of OS maximally sensitive to red and blue light and lighter labeling of OS with maximum sensitivity to green light. This may reflect different carbohydrate compositions of the cone visual pigments. Rod and cones OS fine structure and differential marking of cone OS with the extracellular tracers horseradish peroxidase (only green-sensitive cone OS stained) and microperoxidase (red- and blue- but not green-sensitive cones OS stained) are presented.

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