Nazar, M.Z., A. Umer, Z.M. Sarwar, F.U. Faiz and S. Hussain. 2020. Haemolymph Assay and Morphological Changes of Silkworm, Bombyx mori L. (Bombycidae: Lepidoptera) Infected with Bacillus thuringiensis var. sotto. Pakistan Journal of Agricultural Research, 33(2): 212-216