Fig. 1From: Lipid accumulation mechanism of Amphora coffeaeformis under nitrogen deprivation and its application as a feed additive in Carassius auratus aquacultureGrowth curve of A. coffeaeformis under N-deprived and normal conditions. Cells were cultured at 30 ℃ with 12 h/12 h light cycle and 100–110 μ mol/m2 s−1 light intensity. − N, cells were cultured at N-deprived f/2 medium; normal, cells were cultured at normal f/2 mediumBack to article page