No. It's possible to have a heel spur â a bony growth that usually begins on the front of your heel bone and points toward the arch of your foot â without realizing it. Heel spurs don't always cause pain. In fact, heel spurs often show up unexpectedly on X-rays taken for some other problem.
Immune suppression: Article Excerpts about Immune deficiency conditions. The immune system is a complex and highly developed system, yet its mission is simple: to seek and kill invaders. If a person is born with...(Source: Genes and Disease by the National Center for Biotechnology).
a term used to denote an animal's own antigenic constituents, in contrast to 'not-self', denoting foreign antigenic constituents. The 'self' constituents do not normally elicit an immune response, i.e. there is self-tolerance, whereas the antigens which are 'not-self' do elicit an immune response. Self reactive lymphocytes, particularly T lymphocytes within the thymus, are eliminated.