K2Cr2O7 is a bright red-orange crystalline ionic solid. Prepared by reaction of potassium chloride with sodium dichromate. Soluble in water and ionizes during dissolution
Survival means continuing existence despite potential destruction. Term derives from Late Latin supervivere meaning "to outlive". Can apply to living things, physical objects, and abstract concepts
Normal epithelial cells in urine are less than or equal to 15-20 cells per HPF. Results are indicated as 'few', 'moderate', or 'many' cells. Normal values are not affected by age or gender
CSF is clear fluid surrounding brain and spinal cord. CSF protects CNS and removes waste products. Analysis uses CSF sample to diagnose CNS diseases
Semen analysis evaluates sperm quality and count for male fertility. WHO guidelines established reference values for sperm parameters. Results can be examined macroscopically and microscopically
CBC evaluates blood cell composition and quality in a sample. Normal RBC count ranges from 4.1-6.1 million cells/mcL. Values can vary by age, sex, and race