1. 
   Back diffusion
   If an oil-lubricated pump is operated on a vacuum tank for a long period without a process gas load, the pressure stabilises. Any measuring device connected will show no further pressure changes. However, this does not mean that no more gases are being pumped. Rather, a dynamic balance is set. The f...
   Found op http://www.adixen.co.uk//Applications_and_more/Glossary(1-64--3-20011).html
   
   
2. 
   Back-Fusion
   Back-fusion is the fusion of internal (intraluminal) vesicles within multivesicular bodies or late endosomes with the endosome’s limiting membrane. The process is believed to be mediated by lysobiphosphatidic acid (LBPA), phosphatidylinositol-3-phosphate, Alix , and an apparent dependence on an a...
   Found op http://en.wikipedia.org/wiki/Back-Fusion
   
   

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