Preserving not just updates, but also lots of the now-deleted optional extras Legacy Update was already extremely useful if ...

Mast cell activation syndrome is a condition that causes mast cells to release an inappropriate amount of chemicals into your body. This causes allergy symptoms and a wide range of other symptoms.

1 Allergy Unit and Digestive Diseases Research Unit, Hospital Universitari Vall d’Hebron, Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain 2 Digestive Diseases Research Unit ...