Reasons Periods Are Irregular Or Missing. Although the average menstrual cycle is 28 days with 7 days of bleeding, itâs important to remember that this is just an average. Some women may get a period every 3 weeks or every 6 weeks. And the period may last anywhere from 2 days through to 14 days.
Definitions for immunological. Here are all the possible meanings and translations of the word immunological. Princeton's WordNet(0.00 / 0 votes)Rate this definition: immunological, immunologic(adj) of or relating to immunology.
Immunology. any substance that can stimulate the production of antibodies and combine specifically with them. 2. Pharmacology. any commercial substance that, when injected or absorbed into animal tissues, stimulates the production of antibodies. 3. antigens of a particular type collectively. Origin of antigen.