Quotes by Karl Landsteiner - Page 1

It is very kind of you to consider the possibility of my working in Pasadena, an idea which certainly is attractive, especially since it would hold out the prospect of your cooperation or advice.
Karl Landsteiner / Physician
Advice
Attractive
Cooperation
Ideas
Pasadena
Perspective
Possibility
Since
Certainly
Consider
Hold
Prospect
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Owing to the difficulty of dealing with substances of high molecular weight we are still a long way from having determined the chemical characteristics and the constitution of proteins, which are regarded as the principal con-stituents of living organisms.
Karl Landsteiner / Physician
Characteristics
Constitution
Determined
Difficulty
Living Organisms
Long
Long Way
Organisms
Owing
Principal
Substance
Weight
Chemical
Dealing
Molecular
Proteins
Regarded
Substances
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The morphological characteristics of plant and animal species form the chief subject of the descriptive natural sciences and are the criteria for their classification. But not until recently has it been recognized that in living organisms, as in the realm of crystals, chemical differences parallel the variation in structure.
Karl Landsteiner / Physician
Science
Animal
Differences
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I have recently observed and stated that the serum of normal people is capable of clumping the red cells of other healthy individuals... As commonly expressed, it can be said that in these cases at least two different kinds of agglutinins exist, one kind in A, the other in B, both together in C. The cells are naturally insensitive to the agglutinins in their own serum.
Karl Landsteiner / Physician
Blood
Cells
Two
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On the whole, at least in the author's experience, the preparation of species-specific antiserum fractions and the differentiation of closely related species with precipitin sera for serum proteins does not succeed so regularly as with agglutinins and lysins for blood cells. This may be due to the fact that in the evolutional scale the proteins undergo continuous variations whereas cell antigens are subject to sudden changes not linked by intermediary stages.
Karl Landsteiner / Physician
Science
Blood
Cells
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A single kind of red cell is supposed to have an enormous number of different substances on it, and in the same way there are substances in the serum to react with many different animal cells. In addition, the substances which match each kind of cell are different in each kind of serum. The number of hypothetical different substances postulated makes this conception so uneconomical that the question must be asked whether it is the only one possible. ... We ourselves hold that another, simpler, explanation is possible.
Karl Landsteiner / Physician
Animal
Cells
Numbers
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