表皮
anatomy
below
biology
black
body
care
comprise
dermatology
detail
detailed
disease
drawing
enlargement
explain
fall
follicles
gland
hair
head
health
human
icon
inside
isolated
line
loss
medical
medicine
normal
organ
outline
physiology
research
roots
scalp
science
sebaceous
shaft
skin
structure
study
thin
top
understanding