MANISH KUMAR TRIPATHI, and RAMESH SINGH. “EFFECT OF PHOTOPERIOD AND MELATONIN ON SPLENOCYTE PROLIFERATION IN FRESHWATER SNAKE, NATRIX PISCATOR”. The Bioscan, vol. 7, no. 2, May 2012, pp. 197-00, https://thebioscan.com/index.php/pub/article/view/996.