A total of 21 patients received intravesical BCG for the prevention of recurrence of superficial transitional cell carcinoma of the bladder. Twelve patients received the Glaxo strain and 9 the Pasteur strain of the bacillus. Although thought to have different anti-tumour activities owing to a difference in antigenicity, these 2 strains produced similar tumour-free rates at 5 years' mean follow-up with an overall tumour-free rate of 43%.
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Mukherjee et al. (1992) studied this question.
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