MELVILLE, N.Y. -- This colorful image of a dogfish placoid scale was among the top 10 entered in the 22nd annual Nikon International Small World Competition. David K. Terbush of the George Washington University Medical Center in Washington magnified the dogfish 25 times to capture this image. First- place honors went to Lars Bech of Naarden, The Netherlands, for an 803 image of the anticancer agent doxorubin in methanol and dimethyl-benzenesulfonic acid.