βγ subunit of a G protein, open a special set of K + channels. The resulting IKAch slows the depolarizing effect of Ih .

TLS Online TPP Program

#Id: 4455

#Unit 13. Methods in Biology

Commonly used heavy metals

Uranyl acetate

Osmium tetraoxide 

TLS Online TPP Program

#Id: 4456

#Unit 13. Methods in Biology

Metal shadowing- thin film of platinum is coated from a fixed angle. it provides information about the three-dimensional topology of the sample.

TLS Online TPP Program

#Id: 4457

#Unit 13. Methods in Biology

Scanning electron microscopy (SEM) allows investigators to view the surfaces of unsectioned metal-coated specimens

TLS Online TPP Program

#Id: 4458

#Unit 13. Methods in Biology

Molecules in the metal coating are excited and release secondary electrons that are focused onto a scintillation detector

TLS Online TPP Program

#Id: 4459

#Unit 13. Methods in Biology

Immunoelectron microscopy is used for localizing proteins in thin sections at the electron microscope level.

TLS Online TPP Program

#Id: 4460

#Unit 13. Methods in Biology

To make the antibody visible in the electron microscope, it must be attached to an electron-dense marker.