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Hemocytes contribute to both the formation and breakdown of the basal lamina in developing wings of Manduca sexta



Hemocytes contribute to both the formation and breakdown of the basal lamina in developing wings of Manduca sexta



Tissue and Cell 214: 559-567



Monoclonal antibodies (MAbs) raised against wing tissues of Manduca sexta recognize epitopes shared by both hemocytes and basal laminae. During the last larval stadium, the basal lamina of moth wing epithelium forms after hemocytes have migrated into the space adjacent to basal surfaces of epithelial cells. As adult development commences, hemocytes participate in phagocytosis of the same basal lamina; and as dissolution of the basal lamina proceeds (day 2-day 5 post-pupation), wing epithelial cells send forth long basal processes and rearrange within the plane of the epithelium. During this period of cell rearrangement, the immunoreactivity of the basal lamina decreases in concert with an increase in immunoreactive vesicles within hemocytes; and at the ultrastructural level, hemocytes have been observed to engulf fragments of basal lamina. The distribution of immunolabel in the developing moth wing suggests that hemocytes contribute not only to the formation of the wing's basal lamina but also to its breakdown. Since basal laminae are probably important determinants of epithelial form and pattern, hemocytes also contribute to the shaping of epithelial populations.

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Accession: 001850532

Download citation: RISBibTeXText

PMID: 18620277

DOI: 10.1016/0040-8166(89)90008-6


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