They are the building blocks of flab, the wages of cheesecake, the bloated little sacks of grease that make more of us - more than we can fit into our pants. Scorned and despised, they are sucked out surgically by the billions from bulging backsides, bellies and thighs. But they are not without admirers. "Fat cells are beautiful cells to look at," said Dr. Philipp E. Scherer, an associate professor of cell biology and medicine at Albert Einstein College of Medicine in New York. "I've been working with them for 10 years and I still enjoy looking at them." On...