Protein-formaldehyde reactions applications

Only a few control experiments are possible in immunocytochemistry. One is the application of a preimmune serum or a nonimmune serum, which should fail to give the desired staining reaction. Another control is an absorption or immuno-inhibition test. As discussed under Note 9, it is desirable that this absorption is done with the antigen fixed to a protein that is different from the carrier protein used for immunization. This procedure attempts to mimic conditions encountered m the tissue (which, unfortunately, cannot be known with certainty). Nevertheless, the protein environment of cGMP m the tissue or cells after formaldehyde... 

Compared to previous gluten based adhesives the present resins are applicable in liquid form, thus without any need for modifications of the application systems in particleboard factories. Relative to other protein adhesives such as soy-based adhesives based on reaction with formaldehyde some of the resins presented here have several advantages (i) they cannot and do not produce any aldehyde emission as neither formaldehyde nor any other volatile aldehyde was used in some of the formulations (ii) the percentage of natural materials was increased up to 70% for one type of formulation and up to 95% for others. Furthermore, in relation to resin formulations based on different cross-linking reactions other than those with formaldehyde the resins presented here have other advantages they are competitive with alternate natural resin systems such as those based exclusively on tannins and/or lignins. 

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