2025. BIODEGRADATION OF CHICKEN FEATHER WASTE USING BACILLUS SUBTILIS FOR THE PRODUCTION OF KERATINASE, ITS PURIFICATION AND IMMOBILIZATION WITH POLY (VINYL ALCOHOL)-ASSISTED SILVER NANO-PARTICLES. Journal of Medical & Health Sciences Review. 2, 3 (Aug. 2025). DOI:https://doi.org/10.62019/3k4xf642.