To help with this, a magnifying glass or jeweler s loupe should be used to observe the fine lines, cellular structure, and texture of plant material.
(s; loupe; ) (a magnifying glass or jeweler s loupe; should be used; to observe the fine lines, cellular structure, and texture of plant material)
s a magnifying glass or jeweler s loupe
loupe should be used
to observe the fine lines, cellular structure, and texture of plant material