the effects of the proline-rich phosphoproteins ( prp ) on the rate of precipitation of caco3 from a caco3-supersaturated solution were examined by recording the absorbance at 570 nm and the ph , when 20 mm cacl2 was added to 20 mm nahco3 , in the presence or absence of proteins .
C0031689
phosphoproteins
C0033684
proteins