Hans christian gram biography of nancy wilson

Hans Christian Joachim Gram 13 September — 14 November was a Danish bacteriologist noted for his development of the Gram stain , still a standard technique to classify bacteria and make them more visible under a microscope. He studied at the University of Copenhagen , and was an assistant for botany to the zoologist Japetus Steenstrup.

Nancy Wilson has been a pastor's wife and homemaker in Moscow, Idaho for more than thirty years.

His study of plants introduced him to the basics of pharmacology and the use of the microscope. Gram began medical school in and graduated in He traveled throughout Europe between and In Berlin , in , Gram developed a method for distinguishing between two major classes of bacteria. This work gained Gram an international reputation.

The staining method later played a major role in classifying bacteria. Gram was a modest man, and in his initial publication he remarked, "I have therefore published the method, although I am aware that as yet it is very defective and imperfect; but it is hoped that also in the hands of other investigators it will turn out to be useful. A Gram stain is made using a primary stain of crystal violet and a counterstain of safranin.

Bacteria that turn purple when stained are termed 'Gram-positive', while those that turn red when counterstained are termed 'Gram-negative'. Gram's initial work concerned the study of human red blood cells. He was among the first to recognise that macrocytes were characteristic of pernicious anaemia. During , Gram taught pharmacology , and later that year was appointed professor at the University of Copenhagen.

In , he resigned his professorship of pharmacology to become professor of medicine. He retired from the University of Copenhagen in , and died in Gram's great-granddaughter Lone Gram is a microbiologist who works at the Technical University of Denmark.