A drawing of the
cellular structure of cork and a sprig of the sensitive plant
Robert Hooke’s Micrographia (1665)
Robert Hooked refined the design of the compound
microscope around
1665
Robert Hooked refined the design of the compound
microscope around 1665 and published a book titled
(Blank) which illustrated his findings using the
instrument
Micrographia
suggested that the basic structure of all animal tissues was an
array of "globules," though his insistence on uniform size for
these globules puts into question the accuracy of his
observations.
Henri Milne-Edwards
made the connection between plant cells and animal cells
explicit, and he proposed that the cell was not just a structural
but also a physiological unit: "It is clear that it constitutes the
basic unit of the organized state; indeed, everything is
ultimately derived from the cell"
Henri Dutrochet
Henri Dutrochet
(1776–1847)
was a German botanist who spent a significant part of his
career studying plant structure under the microscope.
Matthias Jakob Schleiden
Matthias Jakob Schleiden
(1804 – 1881)
In his
monograph (blank), which was published in 1838, he described his
observations that different parts of the plant are made of cells,
and he concluded that all plant tissues are made of cells and
that the embryonic plant grows from a single cell.
Beiträge zur Phytogenesis (Contributions of
Phytogenesis)
was a German physiologist and a close associate of Schleiden.
He studied the microscopic structure of various animal tissues
and collaborated with Schleiden on studies of the microscopic
structure of plants and animals.
Theodor Schwann
Theodor Schwann
(1810 – 1882)
Among his many
accomplishments is his discovery of the cells that form sheaths
around neurons in the peripheral nervous system, now known
as
Schwann cells.
In 1839, a year after Schleiden reported his
studies on plants, Schwann published his manuscript entitled
Microscopic Investigations on the Accordance in the Structure
and Growth of Plants and Animals,
In 1839, a year after Schleiden reported his
studies on plants, Schwann published his manuscript entitled
Microscopic Investigations on the Accordance in the Structure
and Growth of Plants and Animals, in which he formally
concludes that
"All living things are composed of cells and
cell products".
was a Polish physician, biologist and contemporary of
Schleiden and Schwann. His work in embryology resulted in
his determination that adult animal tissues come from three embryonic germ layers,
Robert Remak
Robert Remak
(1815-1865)
embryonic germ layers,
the ectoderm, mesoderm, and
endoderm.
endoderm. Remak's experimental observations also showed,
for the very first time, that cells come from (blank) cells
through a cell division process.
pre-existing
was a German physician, pathologist and contemporary of
Remak. His microscopic study of diseases earned him the
moniker "Father of Modern Pathology".
Rudolf Virchow
Rudolf Virchow
(1821 - 1902)