Superinject

Through the needle-hole thus stained with dye it was possible to "superinject" antitoxin, using a slightly wider needle avoid back leak along the old needle track, and thus to ensure a distribution of both toxin and antitoxin solutions from the same point the skin.

Since it was inconvenient to superinject at an interval shorter than 30 min. and since longer periods of up to 2 hr. between injection and superinjection gave no greater reduction, […]

[…] by the introduction into test sites of histamine with the production of a wealing reaction or the superinjection of saline into the test site.