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Zewde, Ashenafi Mebratu, Frances Yu, Sunil Nayak, Christopher Tallarida, Allen B. Reitz, Lynn G. Kirby, ja Scott M. Rawls. "PLDT (planarian Light/dark Test): An Invertebrate Assay to Quantify Defensive Responding and Study Anxiety-like Effects." J Neurosci Methods 2017.

Zewde, Ashenafi Mebratu, et al. "PLDT (planarian Light/dark Test): An Invertebrate Assay to Quantify Defensive Responding and Study Anxiety-like Effects." J Neurosci Methods 2017.