Yamaha has introduced three new in-ear headphones for mp3 players, iPods and other portable entertainment devices. The line, which includes the EPH-20 ($29.95), EPH-30 ($49.95) and EPH-50 ($99.95), ...
Eph receptors are activated by the autophosphorylation of tyrosine residues upon the binding of their ligands, the ephrins; however, the protein tyrosine phosphatases (PTPs) responsible for the ...