Fig. 1From: ACE2 immunohistochemistry in salivary and tracheal glands related to ageRepresentative ACE2 immunohistochemistry of mandibular salivary glands (A) and tracheal glands (B) from 0 year old, whereas mandibular salivary glands (C) and tracheal glands (D) from 69 years old in contrast. Brown diaminobenzidine-positivity shows ACE2 immunoreactivity. The scales at bottom right show 50 µmBack to article page