What is the difference between a hematologist and a urologist ?
血液学家和泌尿科医生有什麽不同?
" If there was a suitable platelet substitute , that would be a tremendous achievement for clinical medicine , " says hematologist marcel levi of the university of amsterdam in the netherlands .
" They have some potentially exciting , preliminary work , " says hematologist paul ness of the johns hopkins medical institutions in baltimore , maryland .
But john hess , a hematologist at the university of maryland school of medicine in baltimore and the former head of the u.s. army 's blood product development program , isn 't sanguine .