Course Hero Logo

Although still relatively new pcr has quickly become

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 20 - 22 out of 24 pages.

Although still relatively new, PCR has quickly become animportant technique for diagnosing infectious diseases such asAIDS, hepatitis, and Lyme disease and for identifying thepathogens responsible for emerging diseases such as WestNile disease and severe acute respiratory syndrome (SARS).Epidemiologists are using PCR to monitor the spread of dis-ease within a population, because it can identify individualsinfected by the same strain of organism.PCR: The Molecular DetectiveBox 5-3Hot TopicsPCR: The Molecular Detective
DISEASE ANDDISEASE-PRODUCINGORGANISMS95Analyzing reactions to various test chemicalsStudying the bacteria by serologic (immunologic) testsbased on the antigen–antibody reaction (see Chapter 17).Scientists now use modern methods of genetic analy-sis to identify organisms by determining the compositionof their nucleic acids. These newer, refined techniques re-veal minute differences in bacteria, and this informationcan be used to identify the source and trace the spread ofinfections in a population. (See Box 5-3, PCR: The Mole-cular Detective.)5Checkpoint 5-19One way of identifying microorganisms is toexamine them under a microscope. Before examination, the cellsare colored so they can be seen. What are the dyes used to colorthe cells called?Medical terms are built from standardized word parts (prefixes, roots, and suffixes). Learning the meanings of these parts can help youremember words and interpret unfamiliar terms.WORD PARTMEANINGEXAMPLECategories of Diseasepsych/omindThe medical field ofpsychiatryspecializes in treatment ofmental disorders.pre-beforeApredisposingcause enters into production of disease.The Study of Diseaseidio-self, separate, distinctAnidiopathicdisease has no known cause; it is “self-originating.”iatrophysician, medicineAniatrogenicdisease results from the adverse effects oftreatment.pan-allApandemicdisease is prevalent throughout an entirecountry, continent, or the world.syn-togetherAsyndromeis a group of symptoms and signs thattogether characterize a disease.chir/ohandChiropractictreatment involves use of the hands formanipulation to correct misalignment of the body.Infectious Diseasemyc/ofungusMycologyis the study of fungi.aer/oair, gasAnaerobicorganism requires air (oxygen) to grow.an-absent, deficient, lack ofAnanaerobicorganism does not require air (oxygen) togrow.tox/opoisonBacteria can harm the body by producingtoxins.diplo-doubleDiplococciare round bacteria arranged in pairs.strepto-chainStreptococciare round bacteria arranged in chains.staphylo-grapelike clusterStaphylococciare bacteria in clusters.py/opusThe species namepyogenesindicates that an organismproduces pus.

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 24 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
peterbice

Newly uploaded documents

Show More

Newly uploaded documents

Show More

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture