groups of 31 male f344/ducrj rats were given 1.25 % opp in the diet ( group 1 ) , 1.25 % opp in the diet plus 0.4 % sodium bicarbonate ( nahco3 ) in drinking-water ( group 2 ) , 2 % opp-na in the diet ( group 3 ) or 2 % opp-na in the diet plus 1 % ammonium chloride ( nh4cl ) in drinking-water ( group 4 ) for 26 wk .
C0005367
bicarbonate
C0074722
nahco3