A positive tuberculin test is an example of 

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#Question id: 19458

#Part-B Specialized Branches in Biotechnology

How phase contrast and DIC microscopy are used to image live cells and unstained tissues?

TLS Online TPP Program

#Question id: 19459

#Part-A Aptitude & General Biotechnology

Phase-contrast microscopy depends on the refractive index of the region of specimen and generates image in which we see a pattern of 

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#Question id: 19460

#Part-A Aptitude & General Biotechnology

In phase contrast unobstructed light passes through a region of________ that both transmits only a small percentage of the light and changes its phase slightly.

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#Question id: 19461

#Part-A Aptitude & General Biotechnology

Phase-contrast microscopy is suitable for observing which kind of sample?

1. Single cells 

2. Group of cells

3. Thin cell layers

4. Thick cell layers

Which of the following options is correct?

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#Question id: 19462

#Part-A Aptitude & General Biotechnology

Splitting of incident light and then recombining them to observe interference pattern occurs in which type of microscopy?

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#Question id: 19463

#Part-A Aptitude & General Biotechnology

DIC microscopy is used for visualizing 

1. Minute details

2. Thick objects

3. Thin objects

4. Larger details

Which among the following options is correct?