% CM = percentage of cows’ milk; 1 + = sample containing 1 % of cows’ milk and spiked with pure bovine casein at the middle of the track. C = cow, E = ewe, G = goat, B = buffalo.
% CM = percentage koemelk; 1 + = monster met 1 % koemelk waaraan in het midden zuivere rundercaseïne is toegevoegd; C = koe; E = schaap; G = geit; B = buffel.