Lr dose

Lr dose

,

the limes reacting dose of diphtheria toxin, that is, the smallest amount of toxin that, when mixed with one unit of antitoxin and injected intracutaneously in the shaved skin of a susceptible guinea pig, yields a minimal, positive reaction and inflammation localized to the region of the injection; the L_rd. closely approximates the L_od., as would be expected, inasmuch as a slight excess of unneutralized toxin results in a reaction.

Lr dose

, Lrdose (dōs)

The smallest amount of diphtheria toxin that, when mixed with one unit of antitoxin and injected intracutaneously in the shaved skin of a susceptible guinea pig, yields a minimal, positive reaction and inflammation localized to the region of the injection.