But when preparing the sample, the samples look like a sponge. When you make a cut, for example, gives examples of the collapse. As a result, when you apply to borrow the capillary or style. Observation difficult.
However, when preparing This looks like a sponge samples When cutting a sample collapse. As a result, when applied to a light or porous nature difficult to observe.
But when preparing the samples was similar to a sponge. When the cutting sample makes example subside. Result on the light porous or style, observe the difficult.