Pulmonary alveolus thin fluid coating within all alveoli. The fluid coating is produced by the body in order to facilitate the transfer of gases between blood and alveolar air. The surfactant is produced by the type II cells which are the most numerous cells in the alveoli, yet do not cover as much surface area as the squamous alveolar cells (a squamous epithelium). Type II cells also repair the endothelium of the alveolus when it becomes damaged. Insufficient surfactant in the alveoli can contribute to atelectasis (collapse of part or all of the lung). Without pulmonary surfactant, atelectasis is a certainty; however,
Humans of New York: The Series unavailable most anywhere else. Stanton partnered with documentary producer Julie Goldman on the series after she had screened some of the footage he had already shot. "Humans of New York: The Series" has been met with a generally positive reception from critics upon its release. "Vogue" writer Mary Wang praised the show for revealing "that plot twists aren’t the most important part of a good story—what matters are the humans behind it." Margaret Lyons of "The New York Times" described the series in positive terms: "It's poignancy on steroids, in that it’s very powerful..." "The Week" critic Sarah Marshall compared