Video: Puas yog Streptococcus loj hlob ntawm cov ntshav agar?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Colonies ntawm Kab mob Streptococcus pyogenes cog rau qov av . Kev cog qoob loo 24 teev nyob rau hauv huab cua aerobic nrog 5% carbon dioxide. Colonies tau puag ncig los ntawm thaj tsam beta-hemolysis. Kab mob Streptococcus pyogenes yog tus kheej kheej, Gram-positive cov kab mob uas yog qhov ua rau pab pawg A streptococcal kab mob.
Yog li, Streptococcus loj hlob rau Agar dab tsi?
GAS loj hlob zoo tshaj plaws ntawm cov "nplua nuj" nruab nrab xws li Trypticase Soy Agar ( TSA ) ntxiv nrog 5% Yaj Ntshav, qhov uas nws ib txwm ua rau thaj tsam loj ntawm β-hemolysis (ua tiav kev cuam tshuam ntawm erythrocytes thiab tso hemoglobin) (Daim duab.
Tsis tas li ntawd, Kab mob dab tsi loj hlob ntawm cov ntshav agar? Ntshav Agar tau siv los cog ntau yam kab mob tshwj xeeb tshaj yog cov uas nyuaj rau loj hlob xws li Haemophilus influenzae, Kab mob Streptococcus pneumoniae thiab Neisseria hom. Nws kuj tseem yuav tsum tau txheeb xyuas thiab sib txawv cov kab mob haemolytic, tshwj xeeb Kab mob Streptococcus hom.
Tsis tas li ntawd, vim li cas thiaj siv ntshav agar rau streptococcus?
Ntshav agar feem ntau siv cais tsis tau nkaus xwb streptococci , tab sis kuj yog staphylococci thiab ntau lwm yam kab mob. Dhau li muab kev nplua nuj rau kev loj hlob ntawm cov kab mob nrawm nrawm, Ntshav agar ua tau siv txhawm rau txheeb xyuas cov khoom hemolytic. Beta hemolysis (saib Daim Duab 1).
Puas yog Streptococcus pyogenes tuaj yeem loj hlob ntawm cov as -ham agar?
pyogenes yog facultative anaerobe, thiab qhov kub zoo rau kev loj hlob yog 37 ° C txog. A as -ham -nplua nuj nruab nrab yog yuav tsum tau rau S. cov pyogenes kev loj hlob, thiab ntshav thiab ntshav tau txhawb nws txoj kev loj hlob. Colonies loj hlob ntawm MS agar tau qhia hauv daim duab 5.3 (C).
Pom zoo:
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