Tyrosine, for example, can convert to phenylalanine, while serine can be created from molecules that are produced during the burning of carbohydrates for energy. The non-essential amino acids include alanine, asparagine, aspartate, cysteine, glutamate, glutamine, glycine, proline, serine and tyrosine. Arginine is also non-essential unless you are in a period of growth.
Pleuritic chest pain. Pleuritic chest pain: Introduction. Any type of chest discomfort or chest pain, with or without breathing difficulty, is a serious symptom that's likely to put you first in the queue at the Emergency Room.
Pleurisy is a certain type of chest pain. It affects a part of your body you may not have heard of: your pleura. Your lungs are wrapped in a thin layer of tissue called pleura. They fit snugly within your chest, which is lined with another thin layer of pleura. These layers keep your bare lungs from rubbing up against the wall of your chest cavity every time that you breathe in.