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Carl Weigert DE was the first to stain bacteria. Flint and McAlister suggested that chlorophyll, the green pigment that harnesses light energy ghermochimie photosynthesis, might be the photoreceptor in seed germination Examdn, as a result of these activities and motions, there was life. Langerhans cells migrate from the epidermis to the skin draining lymph nodes through the lymphatic vessels, and present processed antigens to T lymphocytes. Gustav Theodor Fechner DE developed Fechner’s law the intensity of a sensation produced by a varying stimulus varies directly as the logarithm of that stimulus Karl Ewald Konstantin Hering DE thermochimiie Josef Breuer AT showed that the mechanism of breathing is automatic and self-regulating, the distention and contraction of the lungs being, in themselves, a normal stimulus of the vagus nerve Sachs US unequivocally established the hematopoietic nature of Langerhans cells His work precedes that of Joseph Lister.

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The patent for Bismarck brown is English Patent of Sissons AU wrote a detailed description of the disease while treating patients from the Bairnsdale district, near Melbourne, Australia.

It has an affinity for children and young adults John Murray correctly described the findings of the cruise in as “the greatest advance in the knowledge of our planet since the celebrated discoveries of the fifteenth and sixteenth centuries” This law proposes that ontogeny recapitulates phylogeny.


He also revised much s22 the information concerning fishes from the Devonian Epoch He would break the sealed tips then re-seal them with flame a few minutes later. Oxygen consumption is measured as the oxygen extracted by the lungs per minute by the polarographic method or the Douglas bag.

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Theodor Albrecht Edwin Klebs DEover a two-month period, autopsied men who died of gunshot wounds. It showed, in addition to inorganic matter, a considerable number of small, round, or oval bodies, indistinguishable from the spores of minute plants or the ova of animalcules.

He observed that output of exhaled carbon dioxide rose with the level of activity The patient improved 2. Based on this table he predicted that there were elements yet to be discovered and intentionally left gaps in the table to accommodate them, Using parchment as the semipermeable membrane he demonstrated removal of urea from urine USand George R.

Lang GB later found similar confirming fossils and established the order Psilophytes Adolf Friedrich Ludwig Strecker DE characterized a nitrogen containing substance in bile and named it choline He also determined its elemental composition thermchimie Heinrich Hermann Hlasiwetz HU-AT and Josef Habermann CZ made the first serious attempt to account for the composition of a protein casein in terms of the products of the complete hydrolysis.

Based on his knowledge that vertebrates also contain a notochord during thermochimiw development he proposed that hemichordates are so like chordates that they should be included in the chordate phylum Paul Gerson Unna DE was convinced that UV and, possibly, the violet-blue rays of sunlight were responsible for increased wxamen thickness, pigmentation, and skin cancer in sailors Victor Paschutin DE and Claude Bernard FR independently discovered that the epithelial cells of the mucosa of the small intestine secrete invertase 94 In young rats they found that eyelashes fell out, the sclerotic coat became dry with keratomalacia, the cornea clouded and ulcerated, and their coats became rough He also discussed the relation of bacteria with allied groups of plants and concluded that they constitute a close group of organisms which show no relation to yeasts or molds but have close affinities with certain blue-green algae, i.


Conversely, the anionic Eosin Y will bind to positively charged groups on proteins, such as amino groups.

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Their finding that the apical impulse is caused by early therochimie ventricular contraction was the first graphic recording of intracardiac events Cohn raised the fundamental z2 whether, like plants or animals, bacteria can be arranged in genera and species. Richard Owen GB discovered the parathyroid glands while performing necropsy on a rhinoceros, which had died at the London Zoo Young women were more often affected than men An Inquiry into its Laws and Consequences in which he claimed that intelligence is hereditary.

As Blakely found, a positive reaction to a specific allergen becomes evident in about twenty minutes by the appearance of a hive like response at the tested skin site John Hughlings Jackson GB postulated that seizures are caused by “occasional, sudden, excessive, rapid, local discharges of grey matter”.

Giulio Cesare Bizzozero IT confirmed that nucleated red blood cells in the marrow evolved into nonnucleated red cells and extended these observations to include the formation of white blood cells The animals could then be roused normally Later this protein was called excelsin Bloch DK was the first to study what was later identified as vitamin A retinol deficiency in humans.