We describe a range of interactions of maternal intrusion and infant avoidance, based on microanalysis of videotaped face-to-face play between mothers and 4-month infants. After a brief review of our theory of interaction, and approach to microanalysis, we describe the following interaction patterns: facial mirroring, chase and dodge, chase and dodge in a mother infant treatment case, vocal rhy...

We report a simple method to study the elemental content in cultured human adherent cells by electron probe X-ray microanalysis with scanning electron microscopy. Cells were adapted to grow on polycarbonate tissue culture cell inserts, washed with distilled water, plunge-frozen with liquid nitrogen and freeze-dried. Unstained, freeze-dried cultured cells were visualized in the secondary and bac...