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This journal provides immediate access to some articles. Volume 270(1515); March 22, 2003 Effects of Microphallus papillorobustus (Platyhelminthes: Trematoda) on serotonergic immunoreactivity and neuronal architecture in the brain of Gammarus insensibilis (Crustacea: Amphipoda). PMCID: PMC1691277 Molecular phylogenetic evidence for ancient divergence of lizard taxa on either side of Wallace's Line. PMCID: PMC1691285 Relative testis size and sperm morphometry across mammals: no evidence for an association between sperm competition and sperm length. PMCID: PMC1691278 | ||