these cells , when exposed only to isotonic ringer 's solution manifest a membrane conformation with smooth discontinuous microridges , a cytoplasm with numerous free ribosomes , rough er , thin golgi cisternae , mitochondria , small vacuoles , electron-dense granules , few microtubules , and numerous microfilaments and intermediate filaments with an apparent random distribution , the dissociated cells , when treated with adh or calcium ionophore ( a23187 ) , have the appearance of numerous elongated microvilli over the entire cell surface .
C0010834
cytoplasm
C0007634
cells