Counting Caenorhabditis elegans: Protocol optimization and applications for population growth and toxicity studies in liquid medium - Scanlan, L D; Lund, S P; Coskun, S H; Hanna, S K; Johnson, M E; Sims, C M; Brignoni, K; Lapasset, P; Petersen, E J; Elliott, J T; Nelson, B C (Sci Rep, 2018)