Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Streptococcal Morphology after E-liquid or stock flavor treatments. Light microscopy images were taken at 1000× magnification after treatment with 100 µL of PBS, flavorless E-liquid, or the five stock flavoring agents. The green arrow indicates menthol crystalline formation and the orange arrow points at the presence of a hydrophobic material associated with cinnamon. Black bars on top four images = 10 µm. Images are representative of four different fields of view.
