The renal and branchial heart appendages of Sepia officinalis L. were investigated in order to elucidate a possible involvement of their excretory epithelia in hemocyanin metabolism. Immunocytochemical findings and tracer experiments indicate that after passing the barrier of ultrafiltration the hemocyanin molecules are taken up by the epithelial cells of the renal and branchial heart appendages and are subsequently carried back to the circulatory system, suggesting a mechanism of hemocyanin recycling. Apart from a function in maintaining constant hemocyanin levels, the present study indicates that the renal and branchial heart appendages are also sites of temporary hemocyanin storage.
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A 17 year old male patient presented with bilateral preauricular sinus, right sided second branchial cleft sinus and bilateral hearing deficit. He has previous history of right congenital cataract surgery and right dacryocystorhinostomy at the age of 8 year. He was operated for branchial sinus.
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