1.  H pylori infection and seropositivity have been shown to increase with age, although the immunological responses, in general, may be reduced in the elderly.

2.  The word allergy means different things to different people, from almost any unusual symptom to a specific and measurable form of immunological response.

3.  A greater diversity of lines might also help negotiate an immunological response that has proved so troublesome in transplant patients.

4.  Fever helps the body combat viruses and bacteria by retarding their growth and by stimulating an immunological response.

5.  He also traced sugar units in blood substances, which explained different immunological responses stimulated by blood groups A, B and O.

6.  It stimulates immunological responses, it promotes tissue growth in the brain and lungs.

7.  And it is impossible to distinguish an inoculated animal from an infected one, because the vaccine produces the same immunological response as the disease.

8.  Previous attempts to transplant organs between species have failed, but doctors believe this effort may succeed because immunological responses are weaker in the brain.