K Differentiate primary immune response from secondary immune response. If the followingstatements best describe a primary response, write Pon the blank; if a secondary response,write Son theblank.1. The initial response to an antigen; gearing-upstage2. A lag period of several days occurs before antibodies specificto the antigen appear in thebloodstream.3. Antibody levels increase rapidly and remain high for an extendedperiod._4. Immunologic memory isestablished.5. The second, third, and subsequent responses to the sameantigen.X Several populations of T cells exist. Match the terms in Column B to the descriptions in ColumnA. Write the letter of your choice on the blank.ColumnA1. Binds with B cellsandreleaseschemicals that activateBcells,T cells,andmacrophages_2. Activated by recognizing both itsantigen and a self-proteinpresented on the surfaceof amacrophage3. Turns off the immune responseColumn BA - Helper TcellB - Killer TcellC- Suppressor Tcellwhen the "enemy" has beenrouted4. Directly attacks and lyses cellularpathogensI Application1. Use of birth control pills decreases the acidity of the vaginal tract. Why might thisincrease the incidence of vaginal infection(vaginitis)?23COLEGIO SAN AGUSTIN-BACOLODMBIO 101 LABORATORY ACTIVITY2. A young man is rushed to the emergency room after fainting. His blood pressure isalarmingly low, and his companion reports the man collapsed shortly after being stung by awasp. What has caused his hypotension? What treatment will be givenimmediately?3. James, a 36-year-old engineer, appeared at the clinic in an extremely debilitated condition.He had purple-brown lesions on his skin and a persistent cough. A physical examinationrevealed swollen lymph nodes. Laboratory tests revealed a low lymphocyte count.Information taken during the personal history revealed that James was homosexual. Theskin lesions proved to be evidence of Kaposi's sarcoma. What is James'problem? L T cells and B cells exhibit certain similarities and differences. Check () the appropriatespaces in the table below to indicate the lymphocyte type that exhibits eachcharacteristic.CharacteristicellcellOriginates in bone marrow from stemcells called hemocytoblastsProgeny are plasma cellsProgeny include suppressors, helpers,and killer cellsProgeny include memory cellsIs responsible for directly attackingforeign cells or virus-infected cellsProduce antibodies that are releasedtobody fluidsBears a cell-surface receptor capableofrecognizing a specific antigenForms clones upon stimulationAccounts for most of thelymphocytes inthe circulation

Immune response is a biological reaction that occurs in an organisms to defend against antigens. The…

I Differentiate primary immune response from secondary immune response. If the following statements best describe a primary response, write Pon the blank; if a secondary response, write Son theblank. _1. The initial response to an antigen; gearing-upstage 2. A lag period of several days occurs before antibodies specific to the antigen appear in thebloodstream. _3. Antibody levels increase rapidly and remain high for an extendedperiod. _4. Immunologic memory isestablished. _5. The second, third, and subsequent responses to the sameantigen. I Several populations of T cells exist. Match the terms in Column B to the descriptions in Column A. Write the letter of your choice on the blank. ColumnA Column B A - Helper Tcell B - Killer Tcell C- Suppressor Tcell _1. Binds with B cellsandreleases chemicals that activateBcells, T cells,andmacrophages 2. Activated by recognizing both its antigen and a self- proteinpresented on the surface of amacrophage 3. Turns off the immune response when the "enemy" has beenrouted 4. Directly attacks and lyses cellularpathogens

I Differentiate primary immune response from secondary immune response. If the following statements best describe a primary response, write Pon the blank; if a secondary response, write Son theblank. _1. The initial response to an antigen; gearing-upstage 2. A lag period of several days occurs before antibodies specific to the antigen appear in thebloodstream. _3. Antibody levels increase rapidly and remain high for an extendedperiod. _4. Immunologic memory isestablished. _5. The second, third, and subsequent responses to the sameantigen. I Several populations of T cells exist. Match the terms in Column B to the descriptions in Column A. Write the letter of your choice on the blank. ColumnA Column B A - Helper Tcell B - Killer Tcell C- Suppressor Tcell _1. Binds with B cellsandreleases chemicals that activateBcells, T cells,andmacrophages 2. Activated by recognizing both its antigen and a self- proteinpresented on the surface of amacrophage 3. Turns off the immune response when the "enemy" has beenrouted 4. Directly attacks and lyses cellularpathogens

Basic Clinical Laboratory Techniques 6E

6th Edition

ISBN:9781133893943

Author:ESTRIDGE

Publisher:ESTRIDGE

Chapter2: Basic Hematology

Section2.9: White Blood Cell Differential Count

Problem 15RQ

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A T lymphocyte activated in the GALT will subsequently home to all of the following except _____. (Select all that apply.) a. mucosal lymphoid tissues of lactating mammary glands b. the spleen c. mucosal lymphoid tissues of the respiratory tract d. systemic lymph nodes e. mucosal lymphoid tissues of the gastrointestinal tract f. lymphoid tissues of the skin.
Tetanus (commonly known as lockjaw) is a severe illness thatcauses painful muscle spasms and convulsions and can leadto death. If adults are advised to get a tetanus booster shotabout once every 10 years, what is the probable life span ofthe tetanus-detecting memory B-lymphocytes?
Which statements are true? Explain why or why not.1 T cells whose receptors strongly bind a self-pep-tide–MHC complex are killed off in peripheral lymphoidorgans when they encounter the self peptide on an anti-gen-presenting dendritic cell. 2 To guarantee that the antigen-presenting cells inthe thymus will display a complete repertoire of self pep-tides to allow elimination of self-reactive T cells, the thy-mus recruits dendritic cells from all over the body. 3 The antibody diversity created by the combinato-rial joining of V, D, and J segments by V(D)J recombinationpales in comparison to the enormous diversity created bythe random gain and loss of nucleotides at V, D, and J join-ing sites.
1. Match the following leukocytes (A-L) with the correct description (a-j). Each term should be used only once or it should not be used at all. please do ( E , F, G) Mast cells Neutrophils Macrophages Eosinophils Monocytes Dendriticcells B cells Helper T cells Cytotoxic T cells Basophils Plasma cells Natural killer cells (a) _____ can perform phagocytosis and they are the most abundant type of leukocytes in the blood.(b) _____ are found in various tissues and release histamine and other chemicals involved in inflammation. (c) _____ are cytotoxic cells used for the killing of parasites(d) _____ are transformed into macrophages when they enter tissues.(e) _____ are antibody-producing cells.(f) _____ can specifically kill virus-infected and cancer cells.(g) _____ have receptors consisting of two heavy chains and two light chains(h) _____ can kill pathogens by phagocytosis and present peptide antigen fragments on MHC molecules. (i) _____ are found in…
Outcomes of MHC’s Ag presentation to T cells and Properties of Ag fragments & diversity
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Discuss mode of action of both T cells and B cells in lymphatic system.
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