Complex sentence: In the host, WSSV infects a wide variety of cells from ectodermal and mesodermal origin, and histological changes are seen in the gill epithelium, antennal gland, haematopoeitic tissue, nervous tissue, connective tissue and intestinal epithelial tissue.
Split into simpler sentences: In the host WSSV infects a wide variety of cells from ectodermal and mesodermal origin. Histological changes are seen in the gill epithelium, antennal gland, haematopoeitic tissue, nervous tissue, connective tissue and intestinal epithelial tissue.