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Alterations in cytosine-5 DNA methylation are cheap tiffany observed in most types of human cancer. Although assays utilizing PCR amplification of bisulfite-converted DNA are widely employed to analyze these DNA methylation alterations, they are generally limited in throughput capacity, detection sensitivity, and or resolution. Digital PCR, in which a DNA sample is analyzed in distributive fashion over multiple reaction chambers, allows for enumeration of discrete template DNA molecules, as well as sequestration of non-specific primer annealing templates into cheap tiffany chambers, thereby increasing the signal-to-noise ratio in positive chambers. Here, we have applied digital PCR technology to bisulfite-converted DNA for single-molecule high-resolution DNA methylation analysis and for increased sensitivity DNA methylation detection. We developed digital bisulfite genomic DNA sequencing to efficiently determine single-basepair DNA methylation patterns on single-molecule DNA templates without an interim cloning step. We also developed digital MethyLight, which surpasses traditional MethyLight in detection sensitivity and quantitative accuracy for low quantities of DNA. Using digital MethyLight, we identified single-molecule, cancer-specific DNA cheap tiffany events in the CpG islands of RUNX3, CLDN5 and FOXE1 present in plasma samples from breast cancer patients.

COVER: Photographed by Ruven Afanador. Fashion editors: Tracy Taylor and Mary Alice Haney. Sarah Jessica Parker, hair: Chris McMillan for; makeup: Leslie Lopez for Dior; manicure: Gina Eppolito for; dress, Giambattista Valli; earrings, Jean Schlumberger for Tiffany & Co. Kim Cattrall, hair: Luis cheap tiffany; makeup: Judy Chin at The Milton Agency; manicure: Joanna Czech for Sava Spa; dress, Dior; earrings, House of Lavande; ring, Elizabeth Locke. Cynthia Nixon, hair: Giannandrea for L'Oréal Professionnel Texture Expert; makeup: Matin for Neutrogena Cosmetics Science Expert; manicure: Bethany Newell for Chanel at; dress, Michael Kors; earrings, F.R. Hueb; bangle, Isaac Manevitz for Ben-Amun; studded bangle, Alexis Bittar; ring, Blu. Kristin Davis, hair: Rolando Beauchamp for Bumble and Bumble, makeup: Genevieve for Guerlain; mani- cure: Elisa Ferri at See Management; dress, Michael Kors; brooch, Alexis Bittar; purple ring, Paloma Picasso for Tiffany & Co.; silver rings, Davis's own.

The Sex and the City movie arrives not a moment too soon. As the war in Iraq and the fractious political cheap tiffany rage on, we're reminded how much has changed since the girls hoisted their first round of Cosmopolitans. Closer to home, the pink slips are flying as mass corporate layoffs are becoming the norm. The good news is, if it happens to you, there's a very good chance you'll weather it in style, just like the women in our package "Surviving a Layoff" (p. 94). As Carrie herself put it, after taking a memorable tumble on the runway, "When real people fall down in life, they get right back up and keep on walking." Amen to that!