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1. What is the hematocrit percentage of this capillary tube? 2. The sample is taken from a male – is it within normal range?    

Name the labeled vessels:

Helper T (CD4) cell activation requires ________.

Which of the following statements is true regarding red blood cell recycling

Select all that apply: Which of the following describes the components of hemoglobin:

Cytotoxic T (CD8) cell activation requires ________.

1. Which letter represents the P wave? 2. Which letter represents ventricular repolarization?  3. Which letter represents arterial repolarization? 

Select all that apply: Which of the following describe the functions of blood:

B-lymphocytes are considered part of the adaptive branch of the immune system for all of the following reasons but one. Which of the following is not one of the reasons B-lymphocytes are considered part of the adaptive immunity?

Name the labeled vessels.