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COVER This week's issue features a Perspective that describes how a plant-like signaling pathway in the protozoan pathogen Toxoplasma gondii results in the secretion of proteins involved in its escape from its host cell, a finding that raises hopes for new approaches to combat these parasites. The image depicts T. gondii (in green) during the lytic stage. [Image: Preston Huey, AAAS]

Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882