Images from TEM and SEM

You: ‘Professor since we have learned the theoretical differences between SEM and TEM, and we’ve had practice identifying when one technique is preferable over the other. Can we go ahead and have a look at the ImmunoBoost-treated slides? I am really curious to see the outcome.’ 

Prof. Jones: ‘I like your enthusiasm! However, before we move on to analyzing the ImmunoBoost-treated slides, let’s put that knowledge into action by examining real images captured by both methods. Here are two micrographs taken from rather different perspectives. Remember to think about clues like three-dimensional surface topography versus internal cross-sectional detail.’

(Students gather around, discussing key features such as texture, depth, and contrast.)

Which of the below images is from SEM and which is from TEM?

                      Image A                                           Image  B

From: Urry, L. A., Cain, M. L., Wasserman, S. A., Minorsky, P. V., Orr, R. B., & Reece, J. B. (2020). Campbell