Evaluation of the effect of cell freshness on pyrogen detection using a serum-free monocyte-activation test. - Hayashi, Katsuhiko; Sano, Mizuki; Kanayasu-Toyoda, Toshie; Morita, Yuji; Yamaguchi, Teruhide; Ohya, Kenji; Kikuchi, Yutaka; Izutsu, Ken-ichi; Hara-Kudo, Yukiko (PLoS ONE, 2024)