The cardiovascular system consists of
a. blood, blood vessels, and the heart.
b. blood, blood vessels, the heart, lymph, lymph vessels, and lymphatic tissues.
c. the heart and coronary arteries.
d. the heart, blood vessels, and lymph vessels

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm