quite significantP < 0.05
When KH 2 PO 4 in the medium is replaced either by Ca 3 (PO 4 ) 2 or L - α -phosphatidylcholine, the increase in cyanobacterial cell density is quite significant ( P < 0.05, P < 0.01), and become more prominent with increase in inoculum density of strain JXJ CY 19 T (Tables 2 and 3 ).