statement of problem: primary teeth discoloration can cause mentally and socially unpleasant effects in children. this can also be a sign of systemic disease. despite the importance of this subject, a comprehensive study has not been performed yet. purpose: the aim of this study was determining the frequency of different types of primary teeth discoloration. materials and methods: in this cross...

I value very highly the honour of having been invited to give the opening address at this centenary celebration of Neisser's birth, but I am very acutely conscious of my defects as an historian and hope that members of the distinguished company here to-night will fill the gaps that are inevitable in my story, because only with your help will the Osler Club honour worthily the memory of a man wh...

.Common wisdom has it that "you can't do two things at once," but people do combine activities all the time. They walk and talk, eat and listen, drive and think. When two things are done simultaneously, must one or both suffer? Do the tasks interfere with each other? Must one of them be done unconsciously? Are they somehow fused? Questions like these are often answered on the basis of assumptio...

In 1908 Neisser applied the principles of the tuberculin test to the diagnosis of syphilis, using extracts of syphilitic organs (Neisser, 191 1). Noguchi (1911) used a suspension of killed cultures of T. pallidum which he called "luetin". While the organ extracts proved more satisfactory than "luetin", the results were unreliable and this original "luetin" test was largely abandoned. Rottmann (...