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The parasitic red algaHarveyella mirabilis(Reinsch) Schmitz & Reinke was examined by light and electron microscopy to determine the structural mechanism involved in nutrient transfer. The host‐penetrating rhizoidal cells are unique in possessing an extensive and apparently dynamic endomembrane system as well as other unique cytoplasmic inclusions. The membrane system consists of the plasmalemma, pinocytotic vesicles, multivesicular and concentric bodies, endoplasmic reticulum, dictyosomes, micro‐body‐like structures and an extensive vacuolar system. It is proposed that this system is active in the uptake and processing of host‐derived nutrients. Plasmalemmal extensions (plasmalemmavilli) ofHarveyellamedullary cells may also function in nutrient uptake.
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Lynda J. Goff (1979) studied this question.
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