Extracts(10µg) IC50 (µg)   % Inhibition   HepG2 MCF7 HepG2 MCF7 SPS extracted with hot water from Spirulina 80.59 81.85 3.09 0.74 grown on medium containing 45 ppm nitrogen SPS extracted with hot water from Spirulina 78.56 88.8 3.69 0.47 0.4 grown on medium containing 128 ppm nitrogen SPS extracted with hot water from Spirulina 83.67 88.09 0.54 grown on medium containing 293 ppm nitrogen SPS extracted with ethanol from Spirulina 85.1 88.51 1.68 0.74 grown on medium containing 45 ppm nitrogen SPS extracted with ethanol from Spirulina 86.99 82.88 2.82 0.47 grown on medium containing 128 ppm nitrogen Novatron ( standard) 59.5 52.81 4 1.4

Table 9: Cytotoxic activity of sulfated polysaccharides extracts assessed on HepG2 and MCF7 cell lines.

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