A nonlinear evolution of the structure, morphology, and optical properties of PbS-CdS films with cadmium nitrate in the reaction mixture.

Herein, we describe the nonlinear processes for the formation of thin films of the PbS-CdS system using chemical bath deposition with a gradual change in the cadmium nitrate content in the reaction mixture. The morphology of films was studied via scanning electron microscopy and atomic force microscopy. The mechanism for the formation of thin-film compounds can be considered as cluster-particle aggregation (diffusion-limited aggregation).

[Apoptosis and proliferation of epithelial cells in papillomaviral and chlamydial cervicitis].

Patients with chlamydial and papillomaviral cervicitis show a significantly higher activity of the ectocervical epithelium which is particularly pronounced in papillomaviral infection. This is, however, matched by progressively reduced apoptosis of epithelial cells which in turn suggests the possibility of papillomaviruses and chlamydiae contributing to inhibition of infected cells and, thus, paving the way for development of precancer and cancer of cervix uteri.