Publications by authors named "W Sieg"

The blastocyst expresses paternally derived alloantigens and induces inflammation during implantation. However, it is necessary for the onset of pregnancy. An abnormal response might result in a pathological course of pregnancy or pregnancy failure.

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Intracytoplasmic sperm injection (ICSI) is a widely used and accepted treatment of choice for oocyte fertilization. However, the quality of sperm selection depends on the accurate visualization of the morphology, which can be achieved with a high image resolution. We aim to correct the conviction, shown in a myriad of publications, that an ultra-high magnification in the range of 6000×-10,000× can be achieved with an optical microscope.

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Low biomass microbiome has an increasing importance in today's fertility studies. There are more and more indications for incorporating upper gynecological tract microbiome content in patients diagnostic and in vitro fertilization process, as doing so may help to evaluate chances for a positive outcome. An abnormal endometrial microbiota has been associated with implantation failure, pregnancy loss, and other gynecological and obstetrical conditions.

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The Cantor-Bernstein theorem: how many proofs?

Philos Trans A Math Phys Eng Sci

March 2019

Dedekind's proof of the Cantor-Bernstein theorem is based on his chain theory, not on Cantor's well-ordering principle. A careful analysis of the proof extracts an argument structure that can be seen in the many other proofs that have been given since. I contend there is essentially one proof that comes in two variants due to Dedekind and Zermelo, respectively.

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Objectives: In the paper authors present indications and results of using diagnostic and operative hysteroscopy in the clinical practise and compare histological result with introductory diagnosis of ultrasonography and hysteroscopy.

Materials And Methods: In period of 01.06.

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