scholarly journals New targets in vascular biology and new challenges in vascular medicine

2021 ◽  
Vol 42 (42) ◽  
pp. 4285-4289
Author(s):  
Filippo Crea
2018 ◽  
Vol 98 ◽  
pp. 98-107 ◽  
Author(s):  
Frank R. Brennan ◽  
Laura Andrews ◽  
Antonio R. Arulanandam ◽  
Jorg Blumel ◽  
Jim Fikes ◽  
...  

Elements ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 11-17 ◽  
Author(s):  
G. Libourel ◽  
C. M. Corrigan
Keyword(s):  

Author(s):  
Joachim Frank

Compared with images of negatively stained single particle specimens, those obtained by cryo-electron microscopy have the following new features: (a) higher “signal” variability due to a higher variability of particle orientation; (b) reduced signal/noise ratio (S/N); (c) virtual absence of low-spatial-frequency information related to elastic scattering, due to the properties of the phase contrast transfer function (PCTF); and (d) reduced resolution due to the efforts of the microscopist to boost the PCTF at low spatial frequencies, in his attempt to obtain recognizable particle images.


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