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branching remained undecided. In young cultures on Loeffler's serum spindle-shaped rods and filaments predominated, the latter being shorter than in fluid media. The filaments also showed central, terminal, or subterminal swellings (moniliform bodies) similar to those seen by one of us (I.R.W.L.) in Levaditi's laboratory in 1936. It was noted that the moniliform bodies tended to disappear in older cultures.
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James M. Holmes (1948) studied this question.
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