Although albumin is usually the band, there are marked species differences for the electephoretic mobilities patterns. An additional complication is the description of protein electrophoretic mobilities compared with the migration of human proteins in the same electrophoretic system, rather than by using appropriate protein marked for each species. several
Individual proteins occur within the same eletrophoretically separated fraction, and it is therefor difficult to detect an increase of a specific protein. Statistically significant differences between treatment groups should be interpreted with due consideration of the imprecision of the electrophoretic methods, particularly for fractions which are less than 10% of total protein concentration.