Tooth enamel contains relics of its formation process, in the form of microstructures, which indicate the incremental way in which it forms during enamel formation on teeth (). These microstructures, called cross-striations and striae of Retzius, develop as enamel-forming cells called ameloblasts, which cyclically deposit enamel on developing teeth in accordance with two different biological cl...

6. Dell’Anna ML, Maresca V, Briganti S, Camera E, Falchi M, et al . Mitochondrial impairment in peripheral blood mononuclear cells during the active phase of vitiligo. J Invest Dermatol 2001;117:908–13. 7. Schallreuter KU, Wood JM, Lemke KR, Levenig C. Treatment of vitiligo with a topical application of pseudocatalase and calcium in combination with short-term UVB exposure: a case study on 33 p...

The cuticular plate is a network of actin filaments found in hair cells of the cochlea. In the alligator lizard, it consists of rootlets, emanating from the stereocilia, and of cross-connecting actin filaments that anchor these rootlets. In thin sections, this network displays striking patches of 650 +/- 110-A striae. By quantitative analyses of the images, the mystery of the striae can be expl...

The periodicity of striae formation in the tropical scallop Comptopallium radula (Indo-West Pacific Ocean) was investigated with an in situ marking technique, using the calcein fluorochrome. To minimize scallop stress caused by excessive handling, in situ benthic chambers were used for marking experiments. Once marked, scallops (shell height range: 38.4-75.8 mm) remained on site in a large bent...

Striated features, or striae, form in cometary dust tails due to an as-yet not fully constrained process processes. Using STEREO-B SECCHI HI-1 instrument data, we display the evolution of striae tail C/2011 L4 Pan-STARRS over a period 8 days. This includes morphological changes on 2013 March 14–15, similar reorganisation previously observed C/2006 P1 McNaught. is again attributed Lorentz forces...