Direct analysis of lipids in single zooplankter individuals by matrix-assisted laser desorption/ionization mass spectrometry - Hirao, Shingo.; Ishida, Yasuyuki.; Kimoto, Takashi.; Nakanishi, Masami.; Nakanishi, Oh.; Ohtani, Hajime.; Sekino, Tatsuki.; Tsuge, Shin.; Urabe, Jotaro.