Dremel 543 and EZ544 are both carbide cutting wheels for cutting and shaping on woods, fiberglass, plastics and laminates. Do not use them on metals. For 543 the mandrel is included; for EZ544 use the EZ402 Mandrel.
After Domagk published his findings in 1935, doctors found that Prontosil could control many bacterial infections. Subsequently, other researchers developed derivatives based on the Prontosil sulfonamide group. The resulting so-called sulfa drugs revolutionized medicine and saved many thousands of lives.
View All. Sulfa allergy is a term used to describe an adverse drug reaction to sulfonamides, a group of drugs that includes both antibiotics and nonantibiotics. The antibiotic sulfonamides are more likely to result in allergic reactions than nonantibiotic sulfonamides. In fact, you may be surprised to learn that many of the nonantibiotic sulfonamides do not cause problems in people with sulfa antibiotic allergy -- a common misconception.