Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Photomicrographs (×200 magnification) of representative lung sections from nasal continuous positive airway pressure (A), intubation–surfactant–extubation (Insure) (B), nebulized surfactant (NS) 100 (C), NS200 (D), NS400 (E), and NS600 (F) groups. Panels were obtained from the middle region of the lung.
