الفهرس 
Introduction and Review of LiteratureOnly 14 pages are availabe for public view
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Abstract
The work presented in this thesis Examines the Changes in the Cellular and the humoral immune responses after challenge of S. littoralis and B. mori larvae w’th B Thuringiensis Bacteria and its Spore-8- Endotoxin Complexs the Recorded Highly Opthogenic Fungus A.Flavus and Less Pathogenic one A. Niger H. Bacteriophora Heliothidis Nematodes and Charcoal Particles as A Non- Biological Agent.
changes in TUCs ond DflCs when cxamj ned after vaI’ious post-
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injection periods (2,4.6, 12, 18 and 24 hr). The TIlCs of S. littoralis ShOI.Jcd a DROP in numbers at
the begening ( 2 and 4 hr) and at ’lh end of the exper.iment(18 and 24 hr’) just before th d .ath of the larvae. While THCs iocr ased at 6 and 12 hr pos -jnjpcLion. On the otheI’