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Journal of Cell Science, Vol 22, Issue 3 597-606, Copyright © 1976 by Company of Biologists

JOURNAL ARTICLES

Gap junctions in the differentiated neural retinae of newly hatched chickens

H Fujisawa, H Morioka, H Nakamura and K Watanabe

Gap junctions in the neural retinae of newly hatched chickens were examined in thin section and by freeze cleaving. Unusual gap junctions containing linear arrays of intramembrane particles are found between principal and accessory cones which form a double cone at the region of the outer limiting membrane. These unusual gap junctions are often continuous with macular aggregates of hexagonally packed intramembrane particles which are characteristic of a typical gap junction. Typical gap junctions are also found in both the outer and the inner plexiform layers and in the outer nuclear layer, but are not so abundant as in the outer limiting membrane region. The sizes of intramembrane particles and their centre-to-centre spacing within the macular aggregate of a gap junction in differentiated neural retinae are slightly larger than those in undifferentiated neural retinae. Tight junctions are not found in differentiated neural retinae.


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© The Company of Biologists Ltd 1976