Line Plot from Scientific Research

The biomass accumulation curves of N. oculata, V. stellata, and V. cf. polyphem with two kinds of nitrogen source (NaCNO and NaNO3) under two initial nitrogen concentrations (1 and 2 mM). Each data point represents the mean ± SD of three biological and technical triplicates. *, P-value < 0.05, **, P-value < 0.01

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