Scientists !!

By, Anisha Behanan

Robert Hooke

28 July 1635 - 3 March 1703.

Hooke coined the term cell for describing biological organisms, the term being suggested by the resemblance of plant cells to cells of a honeycomb.

James Till

Born August 25, 1931.

Till started a series of experiments that involved injecting bone marrow cells into irradiated mice. They observed that small raised lumps grew on the spleens of the mice, in proportion to the number of bone marrow cells injected. Till and McCulloch dubbed the lumps 'spleen colonies', and speculated that each lump arose from a single marrow cell: perhaps a stem cell.

Earnest Mccullock.

21 April 1921.

Best known for demonstrating – with James Till – the existence of stem cells.

Robert Brown

27 April 1926 – 20 January 2011.

In 1827, while examining grains of pollen of the plant suspended in water under a microscope, Brown observed minute particles, now known to be amyloplasts (starch organelles) and spherosomes (lipid organelles), ejected from the pollen grains, executing a continuous jittery motion.

Felice Fontana

Felice Fontana (15 April 1730 – 10 March 1805) was an Italianphysicist who discovered the water gas shift reaction in 1780. He is also credited with launching modern toxicology and investigating the human eye.

Lynn Margulis

5 March 1938 - 22 November 2011.

She was an American evolutionary theorist, science author, educator, and popularizer, and was the primary modern proponent for the significance of symbiosis in biological evolution.

Van Leewonhoek

24 October 1632 - 26 August 1723.

He is commonly known as "the Father of Microbiology", and considered to be the first microbiologist. He is best known for his work on the improvement of the microscope and for his contributions towards the establishment of microbiology.