Poison ivy, fragrances, and medications are some common substances that can cause an allergic reaction rash. The rash may vary in size and severity, depending on its cause. A person can treat most ...

Blumenthal et al. (April 1 issue) 1 report delayed injection-site reactions in 12 patients who had received the mRNA-1273 vaccine against SARS-CoV-2. We observed a case of a delayed local reaction in ...

Starting materials go in, and a product comes out. In reality, the same substrates can follow many different pathways ...

The reaction generates amino acids and nucleic acids, the building blocks of proteins and DNA. Four billion years ago, the Earth looked very different than it does today, devoid of life and covered by ...

Drug hypersensitivity results from interactions between a pharmacologic agent and the human immune system. These types of reactions constitute only a small subset of all adverse drug reactions.

A minimal but general method has been developed for catalysing many different cross-coupling reactions — those in which two chemical fragments are joined. It requires only the two substrate substances ...

Scientists have been naming ideas, theorems, discoveries, and so on after other scientists for a very long time (Newton’s laws of motion, anyone?). Chemists are no different. They’ve been naming ...

The earliest description of an incompatible hemolytic transfusion reaction dates to the experimental start of transfusion therapy in the mid-17th century. While treating a nobleman who had episodes of ...