That actually depends. If you don't find the various ways to help the Salarian team, or if you simply just set of the alarms on the far side of the base, Captain Kirrahe will die. If you do that, Commander Rentola will not sell you any more of his wares. If you DO save the team, only a very small portion, I'm willing to say at least three, maybe four Salarians, have died. Those little guys in the white armor that pace up and down the small body of water at the camp. After the battle, they hitch a ride on the Normandy until you reach your next destination, which is most likely the Citadel if you completed Therum, Feros, and Noveria before going to Virmire.