Skip to main content
Figure 6 | BMC Pharmacology

Figure 6

From: The mode of action of dimeticone 4% lotion against head lice, Pediculus capitis

Figure 6

Demonstration of deposited silicon in the trachea after treatment with dimeticone 4% lotion. SEM sequence of a treated abdominal spiracle after gallium ion beam milling. (a) Vertical section through the complex, mushroom shaped atrium with its "honeycomb-like" pattern of plates and chambers (arrowed). (b) The superimposed X-ray spectrograph selecting for presence of silicon. Each dot represents a single reading from the sequential scan. A high concentration of silicon responses can be seen in the atrium of the spiracle (white arrows) and in the distal region of the trachea (blue arrows). (c) Diagram to show the structure of the spiracle, spiracular glands (white arrows), and distal trachea, based on diagrams produced by Webb [9] superimposed on the silicon scan. The high intensity of silicon response on the left of the image (yellow arrows) is due to silicone deposited on the surface of the cuticle, which was cut through at that point. Some silicon can be seen in non-respiratory tract tissues (green arrows) due to scattering of silicone fragments, from deposits on the cuticle surface, by the beam of gallium ions during the milling process.

Back to article page