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 is a branch of biology that covers the study of immune systems in all organisms. It was the Russian biologist Ilya Ilyich Mechnikov who boosted studies on immunology, and received the Nobel Prize in 1908 for his work.