The urethra. According to google, “The urethra is the tube‑like structure that carries urine (pee) out of the body.”
My personal, tentative wild guess is: <em>apnea</em>
Answer:
an disease caused by the lack of some essential or important element in the diet, usually a particular vitamin or mineral.
Answer:
Osteoblasts originate from immature mesenchymal stem cells, which can also differentiate and give rise to chondrocytes, muscle, fat, ligament and tendon cells. Mesenchymal stem cells undergo several transcription steps to form mature osteoblast cells.
