It was very close, but after declining in early trading, the Centient Biotech 200™ fought back during most of the session Monday, finally moving into positive ground just as the markets closed. The index closed up 3.34 points (.1%) at 3369.86. Once again, biotech was weaker than the overall market. The net biotech tech movement wasn’t great, but individual issues showed some big gains and almost-as-big losses. We look at the movers.