Chronic granulomatous disease (CGD) is an inherited (genetic) immune system disorder that occurs when a type of white blood cell (phagocyte) that usually helps your body fight infections doesn't work properly. As a result, the phagocytes can't protect your body from bacterial and fungal infections.
The house was built circa 1939. When used in date ranges, a circa is applied before each approximate date, while dates without a circa immediately preceding them are generally assumed to be known with certainty.
Estimates of Building Age Based on Building Materials. Nails. Prior to the 1800s, nails were hand-made by blacksmiths and nail makers and appear crude compared with modern nails. They are often squared rather than rounded, and have a beaten look on the top of the head. Type A- and Type B- cut nails were used from 1790 to 1830.