The hypotransferrinaemic mouse: Ultrastructural and laser microprobe analysis observations

1995 ◽  
Vol 177 (1) ◽  
pp. 83-94 ◽  
Author(s):  
Theodore C. Iancu ◽  
Hanna Shiloh ◽  
Kishor B. Raja ◽  
Robert J. Simpson ◽  
Timothy J. Peters ◽  
...  
1993 ◽  
Vol 33 (1) ◽  
pp. 36-42 ◽  
Author(s):  
Mark A. Lovell ◽  
William D. Ehmann ◽  
William R. Markesbery

Author(s):  
R. W. Linton ◽  
J. D. Shelburne ◽  
D. S. Simons ◽  
P. Ingram

The use of microanalytical techniques for the subcellular localization of chemical components, both physiologic and xenobiotic, is indicated to better characterize the pathophysiology of alveolar macrophage (AM) interactions with respirable particles. This study correlates conventional SEM/energy dispersive X-ray microanalysis (EDX) with ion microprobe (Cameca IMS-3f) and laser microprobe (Leybold-Heraeus LAMMA 500) mass spectrometry of AMs.


Author(s):  
Raimund Kaufmann ◽  
Bernhard Spengler

Within the search for ultimate frontieres in microprobe analysis, sensitivity, selectivity and spatial resolution are amongst the primary criteria to be assessed. During recent years laser microprobe and ion microprobe analysis have been the most promising and competing approaches which not only share a lot of features in common but, by their physical principles are both rather open to further general improvements and dedicated instrumentations.The term desorption for either laser- or particle-induced ion formation has become common use. Both principles are actually intensively explored especially with respect to produce organic ions by “soft” ionization. Some of the key aspects of such ion formation will be addressed with special emphasis on laser desorption.Both principles are equally well suited for spot probing and/or analytical imaging with spatial resolution in the sub 1 μm range. However, while SIMS ion probe techniques have meanwhile achieved some impressive improvements with respect to practical capabilities by introducing e.g. pulsed high brightness ion sources in combination with TOF-MS the state of the art in the available laser microprobe instruments has virtually remained the same since the first introduction of the LAMMA and LIMA instruments more than a decade ago.


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