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Human cancer cells with nuclei (specifically the DNA) stained blue. The central and rightmost cell are in interphase, so the entire nuclei are labeled.The cell on the left is going through mitosis and its DNA has condensed.
Carl Benda (30 December 1857 Berlin – 24 May 1932 Turin) was one of the first microbiologists to use a microscope in studying the internal structure of cells. In an 1898 experiment using crystal violet as a specific stain, Benda first became aware of the existence of hundreds of these tiny bodies in the cytoplasm of eukaryotic cells and assumed that they reinforced the cell structure.
Cellular homology can also be used to calculate the homology of the genus g surface.The fundamental polygon of is a -gon which gives a CW-structure with one 2-cell, 1-cells, and one 0-cell.
The Universidad Nacional de Rosario (UNR) was created by law N° 17.987, passed on November 29, 1968, and began operating on December 16 of the same year. Shortly after, on March 15, 1969, the National Government passed decree N° 1528, creating the School of Law and Political Sciences of Rosario and incorporating it into the Universidad ...
Ramón y Cajal's drawing of the cells of the chick cerebellum, from Estructura de los centros nerviosos de las aves, Madrid, 1905. The neuron doctrine is the concept that the nervous system is made up of discrete individual cells, a discovery due to decisive neuro-anatomical work of Santiago Ramón y Cajal and later presented by, among others, H. Waldeyer-Hartz. [1]
The Biology of the Cell Surface is a book by American biologist Ernest Everett Just.It was published by P. Blakiston’s Son & Co in 1939. [1]Just began writing the book in 1934 in Naples and finished it in France, shortly before being sent to a prisoner-of-war camp.
A representation by Robert Seymour of the cholera epidemic depicts the spread of the disease in the form of poisonous air.. The miasma theory was the predominant theory of disease transmission before the germ theory took hold towards the end of the 19th century; it is no longer accepted as a correct explanation for disease by the scientific community.
Human history is full of thinkers who observed the difference between how things seem and how they might actually be, with dreams, illusions, and hallucinations providing poetic and philosophical metaphors.