PeerJ Author 170 Points Contributions by role Author 135 Preprint Author 35 Contributions by subject area Cell Biology Food Science and Technology Microbiology Plant Science Pharmacology Freshwater Biology Eiji Tokunaga PeerJ Author Summary Cell Biology Freshwater Biology Microbiology Plant Science PeerJ Contributions Articles 1 Preprints 1 April 4, 2019 Noninvasive and safe cell viability assay for Euglena gracilis using natural food pigment Kyohei Yamashita, Koji Yamada, Kengo Suzuki, Eiji Tokunaga https://doi.org/10.7717/peerj.6636 PubMed 30976462 May 1, 2018 - Version: 1 Characterization of the eyespot and hematochrome-like granules of Euglena gracilis by scan-free absorbance spectral imaging A(x, y, λ) for quantification of carotenoids within the live cells Kyohei Yamashita, Takafumi Yagi, Takumi Isono, Yusuke Nishiyama, Masafumi Hashimoto, Koji Yamada, Kengo Suzuki, Eiji Tokunaga https://doi.org/10.7287/peerj.preprints.26906v1