Research the causes of these diseases that are similar to, or related to, Autoimmune Urticaria: 1  Idiopathic urticaria without angioedema. 2  Chronic urticaria.  Occult infection (e.g., sinusitis, oral infection, cholecystitis, vaginitis, prostatitis, hepatitis, HIV, tinea manus or pedis)
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.
Calcium is most well known to serve as a major building block of bone in the human body, with there being anywhere from 1-2 kg of calcium in the human body that is 99% localized to bone tissue (skeleton and teeth). The calcium tends to be stored in the form of hydroxyapatite crystals (Ca 10 (OH) 2 (PO 4) 6) formed by bone cells known as osteoblasts.