Premakumara GAS, Gunaratne KGNM, Ratnasooriya,W.D., Seneviratne, HR(2004). Effect of human sperm motility stimulant S-ACT-1 isolated from Sri Lankan red alga Gelidiella acerosa on DNA. AFFASA Regional Symposium on Natural Products. Hotel Tree of Life, Kandy. June 2004.