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Figure 1: --Correlation of numbers of erythrocytes and hemoglobin 

 levels with hematocrits in yearling brown trout. Hema- 

 tocrit is expressed as percentage of packed red cells in 

 blood, hemoglobin in grams per 100 ml of blood and number 

 of erythrocytes is expressed in millions. Samples are ar- 

 ranged in order of ascending hematocrit values . 



