Note an aggregated inhomogeneous protein structure. A heat-set ovalbumin gel at pH 5. Note the granular structure. SEM after freeze-drying. A heat-set ovalbumin gel at pH 10.
Dark area represents protein.
Note the homogeneous distribution of protein filaments. A heat set ovalbumin gel at pH 10. SEM after freeze-drying. The cellular structure is induced by ice crystals formed during sample preparation. In particular, information is obtained on the degree of unfolding of the protein molecules, which is important to understand the aggregation behaviour of the protein molecules.