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biology timeline
Creado
Ashton Oveson
⟶ Actualizado 30 oct 2017 ⟶
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Eventos
concept of cell theory articulated by schleiden and schwann
cells discovered by Robert hooke
cell research exploded
jansen created 1st compound microscope
leeuwenhoek discovers protozoa
brown discovered cell nucleus
roelliker discovered sperm and egg are cells too
pringshiem observed how sperm penetrates egg
Virchow concludes that cells come from cells
koliker describes mitochondria
flemming described chromosome behavior during mitosis
chromosome theory of heredity
Golgi describes Golgi apparatus
Behrens separates nuclei from cytoplasm using centrifugation
siemens makes first commercial transmission electron mircoscope
gey and co establish continuous human cell line
eagle sysmatically defined nutritional needs of animal cells
density gradient centrifugation in cesium chloride solutions for separating nucleic acids developed
Cambridge instruments produced first commercial scanning electron mircroscope
transgenic mice and fruitflies are produced
tsien identifies mutant of gfp with enhanced spectral properties
mice are cloned from somatic cells
Hamilton and baulcombe discover siRNA as part of post-transcriptional gene silencing in plants