With delicate hues of purple and pink, a lab technique called gram staining has reliably characterized bacteria for more than a century. Yet many scientists are mistaken about why the vivid method ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

TODAY’S Google Doodle celebrates Danish microbiologist Hans Christian Gram. But who was he and what did he discover? Hans Christian Gram was a Danish microbiologist who Google is celebrating today on ...

Hans Christian Joachim Gram was born on September 13, 1853, in Copenhagen, Denmark. He studied at the University of Copenhagen, where his study of plants introduced him to the fundamentals of ...

Compared with other urine analysis methods, urine Gram stain has a moderate predictive value for detecting gram-negative bacteria in urine culture but does not significantly improve urinary tract ...

The aim of the present prospective study was to assess the validity of the Gram stain–AOLC test for the diagnosis of CRBI in HSCT recipients with nontunnelled CVCs, using the DTP/clinical criteria as ...

There's a problem in cell biology research: to study what happens inside a cell, it has to be destroyed. When scientists use a traditional microscope to observe a cell, they use stains -- chemicals ...

Who was Hans Christian Gram? Hans Christian Gram was a Danish microbiologist who Google is celebrating today on his 166th birthday. The doodle that honours Gram on his birth anniversary today was ...