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ACKNOWLEDGMENTI would like to express my very sincere gratitude to my Supervisor, Dr J, AAdeniji for his wonderful interest in the work and constant encouragement towardsthe completion of the work. He a llowed me free access to himself and contributedimmensely towards the completion of the project. I remain eternally grateful to himfor everything and trust God in His infinite mercy to continually bless him and hisfamily abundantly.I would also like to a ppreciate with to appreciate with t hanks and place 0 nrecord the assistance of my Head of the Department, Prof Olaleye. He assisted me inso great measure that words could not express my indebtedness to him. May GodAlmighty bless him richly?My sincere appreciation is hereby extended to Prof. F. D Adu, who gave meboth moral and technical support. He diligently guided me towards the completionof the work. May he remain blessed in all his endeavors? I am equally grateful to Dr(Mrs.) G. Odaibo for her moral and technical assistance towards the completion ofthis work. May God greatly reward her for a work well done.This work would not have been possible without the financial support Ireceived from the Third World Organization for Women in Science (TWOWS). Iconfess tothe fact t hat it w as rare 0 pportunity well utilized a nd I hereby place 0 nrecord my heartfelt appreciation of the award. TWOWS,.I say more grease to yourelbow. May the good seed you are sewing towards the development of Science andWomen in the Third World countries continue to yield positive fruits.Dr. Christian Mathiot (former) and Dr Simon (current), Directors of! nstitutPasteur De Dakar, (IPD), Senegal, hosted and provided me with all that I neededduring my Sojourn in Senegal. My two Supervisors in !PD, Dr. Marie-Francois Saronand Dr. Ousmane Diop, I am eternally grateful to them for their support, patience andexpertise guidance towards the completion of this project. I remain greatly indebtedto you all. And to all the staff of IPD especially Mme Mbayne Niag, Mme Mondo,Modu Diagne, Mme Girault, Merry Payne, Aishatu, Ahmed, Rougy, Ousmane Faye,Ka, to mention, I say a 'big' thank you to you all for all your support andunderstanding you accorded me during my stay at Dakar. "Merci beaucoup.'I received a very warn] and wonderful moral support from the staff of theNigerian Embassy, Dakar, Senegal especially, Mrs. O. Chukwura a friend, sister andIV