Weiss was looking for F. Novicida genes that are essential for virulence: causing disease in a live pet. Intriguingly, he found a DNA sequence that has been shown to encode a proteins of the CRISPR program recently. What they were doing in F. Novicida during disease was a puzzle. The mutations have a solid effect in the bacterias, Weiss says. The crazy type will kill mice, while the mutants are eradicated after a few days. But why would the bacteria have to defend against foreign DNA to cause disease in a mouse? It didn't seem sensible.Weiss, director of Breasts Health Outreach at Lankenau Medical Center, in Philadelphia, and president of Breastcancer.org. ‘We have to become armed with the very best medical information and also have clearness about what’s greatest for them, so each woman can take advantage of early recognition.’ Weiss said she’s worried about the new recommendations because they’re centered on women of ‘typical risk.’ ‘Risk is poorly understood and it’s not accurately measured by any of the tools we have and it’s really something that changes as time passes,’ Weiss told CBS News. She said all women thought to be in the common risk category could be at higher risk and just don’t know it, so they could need earlier screening or additional screening testing actually. ‘A woman might have been regarded as at normal risk before but when someone in her family members had breast cancer or ovarian caner, her records may not have been updated and the ladies didn’t think to talk to her doctor about any of it,’ stated Weiss.

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