Slide 82 - Scalp.  Look for an aggregation of large, empty circles.  Fat cells accumulate so much liquid that the cytoplasm becomes a thin shell at the outside and the nucleus is pushed to the periphery.  In routine tissue fixation, the fat is dissolved out, leaving empty spheres.  (With osmic acid fixation, the fat is preserved and stains black.)  In between individual fat cells there are fine collagen fibers, capillaries, and connective tissue cells.  Can you find the nucleus of a fat cell?

While looking at this slide, scan for areas that you might identify as loose areolar or dense irregular connective tissues.  The main difference between the two types is the thickness of their fibers. Also, the denser the fibrous component, the fewer are the cells and the less obvious is the ground substance space.