Lamellar bodies in differentiating insect tissues during basal lamina formation as revealed by tannic acid |
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Authors: | J Lai-Fook |
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Institution: | 1. Department of Zoology, University of Toronto, Toronto, Ontario, Canada M5S 1A1 |
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Abstract: | Tannic acid penetrates differentiating tissues differentially resulting in variable contrast, extraction and dense bodies with a lamellar substructure. The penetrability appears to correlate with the existence and/or robustness of a basal lamina. In the male genital tract, probably of mesodermal origin, tannic acid penetrates the epithelium until there is a basal lamina, but in the ectodermal bursa copulatrix it does not penetrate since there is always a basal lamina. The lamellae of the dense bodies have a center-to-center spacing of 4.65 ± 0.025 nm, dimensions which resemble those of phospholipids. |
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Keywords: | Lamellar bodies tannic acid basal lamina differentiating organs |
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