Pemanfaatan ekstrak etanol rimpang temu mangga (curcuma mangga val.) terhadap kadar bilirubin total dan bilirubin direct serum darah tikus (rattus norvegicus l.) jantan galur sprague-dawley = The utilization of ethanol extract mango ginger (curcuma mangga val.) rhizomes to total bilirubin and direct bilirubin of the sprague-dawley pure strain male rats (rattus norvegicus l.) blood serum