Nattayaporn Chirasuwan, Ratana Chaiklahan, Marasri Ruengjitchatchawalya, Boosya Bunnag, and Morakot Tanticharoen. 2007. “Anti HSV-1 Activity of Spirulina platensis Polysaccharide”. Agriculture and Natural Resources 41 (2). Bangkok, Thailand:311-18. https://li01.tci-thaijo.org/index.php/anres/article/view/244246.