AIP Conference Proceedings [AIP Publishing INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND NANO-MEDICINE FROM NATURAL RESOURCES FOR BIOMEDICAL RESEARCH: 3rd Annual Scientific Meeting for Biomedical Sciences - Malang, Indonesia (21–23 November 2018)] INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND NANO-MEDICINE FROM NATURAL RESOURCES FOR BIOMEDICAL RESEARCH: 3rd Annual Scientific Meeting for Biomedical Sciences - The effect of vitamin C, vitamin E, glutation and zink combination on the number of sertoli and leydig cells: Pre-clinical test in male wistar rats (Rattus norvegicus) exposed to cigarette smoke