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His first success was the combination of the stains Congo red and malachite green. By extracting the salts formed he avoided the water reaction and the stain remained. (Chieco & Derenzini)
Around 1914 Feulgen promoted the hypothesis that there were only four nucleotides forming any nucleic acid, which at the time was thought too few for the multiplicity of the gene pool. His own research later proved this correct. Feulgen's research was interrupted during this time with a stint as a military doctor in World War I. On March 13, 1916 in he married Frieda Brauns, who was also a medical student. It was around this time (1918) that he discovered that fushicn acid would react with nucleic acids turning them a bright fuchsia. While an interesting discovery he did not immediately recognize the significance of this staining technique. In 1919 he received...
In honor for the work that he had done to date, Robert Feulgen was given the title of Extraordinary Professor for Physiological Chemistry in 1923. It was in 1924, with the help of his associate H. Rossenbeck, he published a paper on the subject of the fuschin acid staining of nucleic acids which was then termed then "Plasmalreaktion. Much later the name "Feulgen Reaction" was adopted by subsequent generations of scientist in honor of this simple yet remarkable technique. (Bennedum & Meusch) on December 10, 1927, in recognition of his services to science, Robert Feulgen was awarded the title of Personal Professor, and at the beginning of 1928 he was made Director of the Institute of Physiological Chemistry.
During his lifetime however, DNA was
Under the tutelage of Hermann Steudel, a nucleic acid chemical researcher, he found himself immersed in the investigation of what was then termed thymonucleic acid. This would later become know the as building block of all life on earth, DNA (deoxyribonucleic acid), with no little thanks to Feulgen. At the time thymonucleic acid was thought to have something to do with the transmission of genetic material and Dr. Steudel was using a technique called a biuret reaction to stain nucleic acids in order to discover their location inside or outside the cell walls. However the color was lost in the presence of water and hence unusable anywhere outside the lab. Feulgen, realizing the limitations of this technique, experimented with different compounds to overcome this problem. His first success was the combination of the stains Congo red and malachite green. By extracting the salts formed he avoided the water reaction and the stain remained. (Chieco & Derenzini)
Around 1914 Feulgen promoted the hypothesis that there were only four nucleotides forming any nucleic acid, which at the time was thought too few for the multiplicity of the gene pool. His own research later proved this correct. Feulgen's research was interrupted during this time with a stint as a military doctor in World War I. On March 13, 1916 in he married Frieda Brauns, who was also a medical student. It was around this time (1918) that he discovered that fushicn acid would react with nucleic acids turning them a bright fuchsia. While an interesting discovery he did not immediately recognize the significance of this staining technique. In 1919 he received his PhD and was offered a research fellowship at the Physiological Institute at Giessen. In honor for the work that he had done to date, Robert Feulgen was given the title of Extraordinary Professor for Physiological Chemistry in 1923. It was in 1924, with the help of his associate H. Rossenbeck, he published a paper on the subject of the fuschin acid staining of nucleic acids which was then termed then "Plasmalreaktion. Much later the name "Feulgen Reaction" was adopted by subsequent generations of scientist in honor of this simple yet remarkable technique. (Bennedum & Meusch) on December 10, 1927, in recognition of his services to science, Robert Feulgen was awarded the title of Personal Professor, and at the beginning of 1928 he was made Director of the Institute of Physiological Chemistry.
During his lifetime however, DNA was
They are compounds that have carbon, hydrogen and oxygen. There are 3 forms of carbohydrates. First are the monosaccharides which are simple sugars. They have simple structures in the ration of 1:2:1. They usually contain 5-6 atoms of carbon arranged in a 5-6 member ring. Oligosaccharides are monosaccharides which are combined in short strings that are linked together through dehydration synthesis. Sucrose is one of the oligosaccharides. It is
The entire unit is known as a photosytem and in green plants, one finds two of these systems, photosystem I and photosystem II, both of which are involved in the light reactions of photosynthesis. Light energy absorbed by these pigments of the antenna complex is "passed to the reaction center chlorophyll molecules from which it passes along an electron-transport chain" (Blankenship, 215). Photosystems II contains a kind of chlorophyll a
Chemistry Based on the fact that our class focuses on atoms, atomic structure, chemical bonds, nuclear chemistry (radioactivity, nuclear equation, half life, radio isotopes, artificial transmutation, etc.), this article review aims to provide a summary of a related story named "IBM Scientists First to Image the 'Anatomy' of a Molecule; Imaging Individual Atoms Within A Molecule Has Been A Long-standing Goal of Surface Microscopy" by the IBM press team in the
Chemistry and Recreational Drugs The objective of this study is to examine chemistry as it relates to recreational drugs. Toward this end, this study will review literature in this area of inquiry and report on the same. Recreational drugs refer to drugs such as marijuana, methamphetamine, ecstasy, cocaine, and other such drugs. The chemistry of each of these recreational drugs is unique and each cause specific effects to the individual taking these
Chemistry The Many Dimension of Red Red is one of the oldest colors known to humans. It is a color that carries with it significant emotional meanings. Red occurs in nature on Earth and in the cosmos. It is a dynamic color affecting people and animals. The paper will explore the history of the color red with regard to its chemical properties, natural history, and cultural significance. The study of color proves
Chemistry The Prosperous Autobiography of Phosphorus Greetings humans, this message is from your friend, Phosphorus. That's Phosphorus with a "-us" and not an "-ous" and it is often misspelled. I am an element, not an adjective. You may not be unaware of the special connection you have with me, but it exists nonetheless. For you see, I, Phosphorus, am "an essential component of living systems and is found in nervous tissue, bones