RDK PARAMEDICAL STUDENT STUDY

                          E ffecting liver  viruses  & Hepatitis‘B’virus infection         Ans :   The following viruses affect liver.                                  I.             Yellow fever virus ( Arbo virus ).                                II.             Lyssa fever virus.                              I...

                                    Describe lab diagnosis of diphtheria. Causative organism of diphtheria is coryn bacterium It is gram positive, non-motile, rod shaped, non-acid fast bacilli, non-sporing and pleomorphic. Average size Is 3 µ /0.3 µ. 1. Examination of throat swab or laryngcal swab for albert staining. Ø   Prepare smear from throat swab or laryngeal swab. Ø   Dry air and fix over flame. Ø   Pour albert-I for 5-7 mints. Ø   Blot anmd dry with the help of filter paper. Ø   Add Albert-II stain keep it for 3-5 mints. Ø   Wash under tap water. Ø   Diptheria bacilli shows met achromatic dot two pole of bacillius. 2. Culture from throat swab or laryngeal swab on. Loefflers serom agar and Tellurite blood agar. Ø   Loefflers serum agar shows gram positive bacilli with metachromatic granule in 6-8 hours. Ø   Tellurite blood ag...

                                                  Classification of virus On the basis of type of nucleic acids , viruses are classified into two group:- v   Ribo virus or RNA virus→contains RNA. v   DeoxyRibo virus or DNA virus →contains DNA . ü   RNA virus                  A ) Picorana virus (20-30) Eg→ a ) Entero virus        b ) Rhino virus        c ) Rhro virus        d ) Hepato virus (HAV)                B ) Orthomyxo virus ( 80-120nm )                    Eg:- a ) Influenza virus   ...