1. Bacteriology Laboratory, Unity for Research Medical Analysis of the Interdisciplinary, Centre of Medical Research of Franceville (CIRMF), Franceville BP 769, Gabon
2. Laboratory of Molecular and Cellular Biology, Bacteriology-Immunology Team, Agrobiology Research Unit, University of Science and Technology of Masuku (USTM), Franceville BP 067, Gabon
3. Laboratory of Plant Physiology, Phytopathology and Plant Breeding, Agrobiology Research Unit, University of Science and Technology of Masuku (USTM), Franceville BP 067, Gabon
4. Unity for Research Health Ecology of the Interdisciplinary, Centre of Medical Research of Franceville (CIRMF), Franceville BP 769, Gabon
5. Laboratory of Animal Physiology and Pharmacology, Agrobiology Research Unit, Masuku University of Science and Technology (USTM), Franceville BP 067, Gabon