Discharging lipoprotein material
Fig. 10.13b Type 2 pneumocyte and surfactant.
Electronmicrograph showing an active Type 2 pneumocyte. The cell is round and has a convex luminal face which is covered with microvilli. The most obvious
intracytoplasmic organelles are large membrane-bound spherical bodies (B)
containing lamellated lipoprotein material, which represents the surfactant
substance. These can often be seen discharging their contents onto the
luminal surface (arrows).
