表皮
3
3d
anatomy
biology
blood vessel
blue
body
cell
clip art
components
comprise
deep
dermatology
detail
diagram
explain
fat
geometric
health
human
illustration
inside
isolated
isometric
layer
level
medical
model
muscle
nerve
normal
object
organ
physical
physiology
pore
red
sample
science
sebaceous glands
skin
spit
structure
surface
sweat glands
text
tissue