From time immemorial leprosy has been held in almost superstitious horror by the laity—thanks probably to the Scriptural attitude toward it; and to physicians even now it presents problems such as are encountered in few, if any, other diseases. In light of recent contributions toward its study, however, many of these problems appear to be in a fair way toward solution. It is almost two years since Clegg1 first announced the successful prolonged cultivation of the organism of leprosy on artificial media, and Duval2 since then has devised methods that make this proceding one of comparative simplicity. Clegg's method consisted in first growing the organism along with amebas and symbiotic bacteria; after several transplantations under such conditions, the bacillus became altered sufficiently to permit growth in pure culture. Duval, however, has shown that the essential element necessary for its artificial growth is the presence in the medium of
RECENT STUDIES OF LEPROSY. JAMA. 1911;LVI(14):1038. doi:10.1001/jama.1911.02560140024012
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