Microbiology and Immunology 2500A/B Lecture Notes - Lecture 1: Cell-Mediated Immunity, Streptococcus Pneumoniae, Human Microbiota
Document Summary
Immunology: study of our protection from foreign macromolecules, invading organism, and our responses to them. Made of nucleic acid, rna or dna & capsid (protein shell) Enter and grow in living cells: divert the synthetic process of host cell towards their own replication, attach, penetrate & inject nucleic acid. Chlamydia: more complex than viruses but only multiply in living cells. Bacteria aka prokaryotes = not true nucleus = no separate nucleus. Rigid cell wall with cytoplasm and circular chromosome for genetic material. Mycoplasmas: similar to bacteria w/ no rigid wall (delicate version, grow on non living media. Genetic material is organised in the nucleus. All unicellular and multicellular animals and plants. Normal bacterial flora (the good guys :) ) Pre-wash culture = only transient flora = less colonies. Post-wash culture = normal flora = more colonies. Types of bacterial populations: resident, bacteria we keep around for a long time/life time.