The answer to this question would be : <span>Clustered</span>
Herpes simplex vesicle has a unique distribution. They are distributed same as the dermatome nervous distribution. Since the dermatome area is limited, then the vesicle on the skin mostly will be placed close together called a cluster. The vesicle might be painful and itchy. Prescribing an analgetic lotion might lessen these symptoms.
The results will most likely be valid because the scientists kept getting the same results after REPEATED experiments. If they just conducted one experiment then they would not have been sure if what happened was a fluke or if another thing would happen after another experiment.<span />
