-
maggots developed where??
Athanasius Kircher showed that maggots and
other living creatures developed in decaying
tissues. -
are these blood cells?
oval red-blood corpuscles were described by the Dutch naturalist Jan Swammerdam -
royal society letter
the particles that hoek saw under his microscope were motile and,
assuming that motility equates to life, he
went on to conclude, in a letter of 9 October
1676 to the Royal Society, that these particles. were indeed living organism.he called them animalcules -
achromatic microscopes
in the 1830s were achromatic microscopes introduced, allowing
more precise histological observations.Improvements were also made in tissue preservation and -treating techniques. -
cell theory formulation picture
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Period: to
cell theory formulation
the idea that the cell is the basic component of living organisms emerged
well before 1838–39, which was when the
cell theory was officially formulated. -
proven wrong
the theory of free cell formation was refuted in the 1850s by Robert Remak, Rudolf Virchow,
and Albert Kölliker who
showed that cells are formed through the scission of pre-existing cells7 -
cell picture book
A book by Karl Deiters was
published in 1865, it contains
beautiful descriptions and drawings of
nerve cells studied by using histological
methods and microdissections made with
thin needles under the microscope -
black reaction 22
The most important breakthrough in
neuroethology and neuroanatomy came in
1873 when Golgi developed the ‘black reaction’22, it allowed scientist to clearly view neurons without damaging the tissue -
mitosis named
a number of structures (ribbons, bands
and threads) appeared during cell division.
As these structures could be heavily stained,they were called ‘‘chromatin’’ by Walther
Flemming (1843–1905), who also introduced the term ‘‘mitosis’’ in 1882. -
all in one
In October 1886, the Swiss
embryologist Wilhelm His put
forward the idea that the nerve-cell body
and its prolongations form an independent
unit.
