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1 March 2002 Changes in Host and Parasite-Derived Cellular and Extracellular Matrix Components in Developing Cysts of Myxobolus pendula (Myxozoa)
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Abstract

Cysts of Myxobolus pendula from the gill arch of creek chub (Semotilus atromaculatus) were examined at various stages of development using light and electron microscopy. The subepithelial host connective tissue underwent dramatic changes, including degradation and remodelling of collagen and vascularisation, in response to the infection. Inflammatory cells lay in a fluid-filled space beneath the host's connective tissue and surrounded a distinctive parasite-derived matrix, composed of collagen fibril bundles embedded in cellular processes of the underlying secretory cells. This collagen matrix was resistant to degradation and invasion by leukocytes. Secretion of a matrix by M. pendula as a structural support, and a protective barrier against the host inflammatory cells is a novel observation for cyst-forming Myxosporea.

AMANDA A. MARTYN, HENRY HONG, MAURICE J. RINGUETTE, and SHERWIN S. DESSER "Changes in Host and Parasite-Derived Cellular and Extracellular Matrix Components in Developing Cysts of Myxobolus pendula (Myxozoa)," The Journal of Eukaryotic Microbiology 49(2), 175-182, (1 March 2002). https://doi.org/10.1111/j.1550-7408.2002.tb00362.x
Received: 14 December 2001; Accepted: 19 February 2002; Published: 1 March 2002
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