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To the Editor:—Dr. Hans Biberstein is responsible for a paper, "Immunization Therapy of Warts" (Arch. Dermat. & Syph.50:12 [July] 1944). In his paper Dr. Biberstein quotes me on page 12 as saying: "Findlay's statement that warts of one species . . . are not referable to another species was refuted by Frank Schulz and others" (Schulz, F.: Experimentelle Uebertragung von Verrucae vulgares vom Rinde auf den Menschen mit ausserordentlich langer Incubation, Deutsche med. Wchnschr. 34:423, 1908).
On page 15, Dr. Biberstein states: "Fifteen patients had condylomata acuminata; 9 of the 10 (90 per cent) who could be reexamined were `uninfluenced', [sic] 7 who received up to fifteen injections were `influenced.' This refutes the second part of Findlay's statement that extracts of warts have no curative effect in animals of a different species."
Dr. Biberstein has obviously not done me the honor of reading my original paper,
Findlay GM. IMMUNIZATION THERAPY OF WARTS. Arch Derm Syphilol. 1945;51(6):409. doi:10.1001/archderm.1945.01510240055012