The Latest 'Google Doodle' Celebrates

Google is celebrating 166th birthday of Hans Christion Gram. In his honor, they are putting a doodle for his birthday.

Who Is Hans Christian Gram?

Hans Christian Gram was a Danish Bacteriologist. There Contribution to the development of the Gram Stain. He was born on 13th of September, 1853 in Copenhagen. Hans Gram’s father name was Frederik Terkel Julius Gram, who was a professor of jurisprudence, and Louise Christiane Roulund.

The Latest 'Google Doodle' Celebrates "Hans Christian Gram's 166th Birthday" on Friday

Hans Christian Joachin Gram was studied at the University of Copenhagen and work as an assistant in botany to the zoologist Japetus Steenstrup. Gram’s research of plants introduced him to the fundamentals of pharmacognosy and the use of the microscope. He entered the medical college in 1878, and he graduated in 1883. He traveled throughout Europe between 1878 to 1885. In 1884, while Gram’s was in Berlin, he produced a method for distinguishing between two major classes of bacteria.

In 1891, Hans Christian Grams was teaching pharmacology and succeeding that year he was appointed professor at the University of Copenhagen. In 1900, he took resign with his chair in pharmacology to become a professor of medicine.

Gram Stain 

The research that increased Grams an international reputation was his development of a method of staining bacteria, which make bacteria more visible under the microscope. The stain later performed a significant role in distinguishing bacteria. Hans Gram was a humble man, and in his early discovery he mentioned, “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.”

In Gram Stain is created using a primary stain of crystal violet and a counterstain of safranin. Bacteria were turned purple when stained are called ‘Gram-positive, and while those were turned red when counterstained are called ‘Gram-negative.’




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