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Electron micrographs of negatively stained inactivated influenza viruses; numbers 1 and 2 indicate repeats of the same samples. (A1 & A2) Whole viruses prior to the TX-100 treatment, (B1 & B2) after treatment with 0.04% TX-100 for 40 minutes, and, (C1 & C2) after treatment with 0.07% TX-100 for 40 minutes. Virus dimensions ranged from ˜100–250 nm. Scale bar is 100 nm.
