Chapter

Alveolar stem cells go beyond making gas-exchange cells to repair damaged airways

From Nature by Sambif

Concepts

1. AT2 Cells

   "Alveolar type 2 (AT2) cells are the stem cells of the lung’s air sacs and are responsible for maintaining alveolar structure and gas exchange. A study that tracked AT2 cells shows that, after injury

2. Tetrapod Neck

   "As fish evolved into four-limbed creatures, their skull separated from their shoulders to form a neck. Now we learn that this early neck was surprisingly rigid."