highly significantP < 0.01
This was highly significant for intracellular, cell wall and total extracts obtained from C. purpureus and S. antarctici (P < 0.01) where concentrations had doubled within a month in their natural environment; but was only significant for the cell wall extract of B. pseudotriquetrum (P < 0.05; Table 2 ) when analysed individually via Student’s t-tests (not significant in the two-way ANOVA of all species).