
The ABO system was discovered in 1900 by Karl Landsteiner. Based on his assumption of two erythrocyte antigens, A and B, Landsteiner found it possible to classify human individuals into four blood groups depending whether one, both, or neither of these antigenic characters were present on the cells [272,273]. He also recognised that the sera of individuals lacking one or both antigens usually contain anti-A and/or anti-B isoagglutinins (see Table 5.1).
| citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 9 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
