3Q12 US Tysabri sales were $230M, +17% YoY, +9% QoQ:
9% sequential is very good, provided there is not a price increase in that.
The delay of BG12 to the end of March will also delay switching.
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It is astonishing what foolish things one can temporarily believe if one thinks too long alone ... where it is often impossible to bring one's ideas to a conclusive test either formal or experimental. J.M. Keynes