Plate IV depicting the effect of antitoxin on the local diphtheritic process with description underneath the plate as follows:
The figures on the left show the gradual increase of the false membrane from the first to the thirty-sixth hour. The figures on the right show the disappearance of the membrane during the next thirty-six hours as a result of the use of antitoxin.
Hare, H.A. (Hobart Armory). “Plate IV: Showing the Effect of Antitoxin on the Local Diphtheritic Process.” A Text-Book of Practical Therapeutics, with Especial Reference to the Application of Remedial Measures to Disease and Their Employment upon a Rational Basis, 1909. https://digital.sciencehistory.org/works/8w32r668b.
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