Acute and Sub-acute Toxicities of Thai Silkworm Powder (Bombyx mori Linn.) From Three Races in Male Wistar Rats and In vitro Antioxidant Activities, Rattana, Surapong, Katisart Teeraporn, Sungthong Bunleu, and Butiman Chirapha , Pharmacognosy Journal, May 2017, Volume 9, Issue 4, p.541-545, (2017)