Microscopy

The previously mentioned ….. will often rely on microscopic examination for identification of the microbe. Instruments such as … can be used to view the specimen under ordinary illumination to assess critical aspects of the organism. This can be performed immediately after the sample is taken from the patient and is used in conjunction with biochemical staining techniques, allowing for resolution of cellular features. …. are also used for observing microbes in greater detail.

electron microscopes and fluorescence microscopes; culture techniques; compound light microscopes

*Using your knowledge of Physics, argue your answer to the following question: What microscope is more precise: electron or light?

Exercise 14. Make the sentences interrogative and negative paying attention to Modal Verbs. Translate them:

1. A medical microbiologist can prove his investigation.

2. The scientists could identify many disease-causing microorganisms.

3. The branches of microbiology may be classified into pure and applied sciences.

4. Medical microbiologists must serve as consultants for physicians, suggesting treatment options.

5. Only definite microorganisms might cause infectious disease.

6. A microbiologist may also assist in preventing or controlling epidemics and outbreaks of disease.

7. There are four kinds of microorganisms that can cause infectious disease; bacteria, fungi, parasites and viruses.

8. Fleming could interest biologists and mould experts in production of penicillin.

Exercise 15. Read and translate the sentences. Put the predicates into the Past:

1. A single microbe on an agar plate can grow into colonies.

2. Fluid samples may be tested for the presence of a specific pathogen.

3. Microbial growth must be determined by the time taken for the liquid to form a colloidal suspension.

4. Certain technique may be used for diagnosing parasites and detecting mycobacteria.

5. Instruments such as compound light microscopes can be used to assess critical aspects of the organism.

6. Diagnosis of infectious disease may be nearly always initiated by consulting the patient's medical history and conducting a physical examination.

7. More detailed identification techniques can involve microbial culture, microscopy, biochemical tests and genotyping.

8. * Other less common techniques must be used to produce images of internal abnormalities resulting from the growth of an infectious agent.

Exercise 16. a). Translate the text using a dictionary:

Дата добавления: 2015-10-21