Which of the following is a late sign of hypoxia?

In the reticulocyte determination, using the Sysmex XE-2100, the fluorescent dye containing oxazine and polymethine penetrates the cell membranes and stains the blood cells. What does the oxazine bind to within the cells?

a. Residual DNA b. Hemoglobin c. Residual RNA d. Mitochondria

The diagnosis of RSV is most often confirmed with a sample obtained by:

a. tracheal suctioning. b. venipuncture. c. arterial blood sampling. d. urine specimen. e. nasopharyngeal aspirate.