Screen-positive rate in cell-free DNA screening for microdeletion 22q11.2.

Objective: To examine the impact of the fetal fraction (FF) on the screen-positive rate in screening for microdeletion 22q11.2.

Methods: This study is based on samples that were analyzed using the Harmony® Prenatal Test (Roche Inc).

The best smellers make the best choosers: mate choice is affected by female chemosensory receptor gene diversity in a mammal.

The products of the genes of the major histocompatibility complex (MHC) are known to be drivers of pathogen resistance and sexual selection enhancing offspring genetic diversity. The MHC further influences individual odour types and social communication. However, little is known about the receptors and their volatile ligands that are involved in this type of chemical communication.

Learning where to feed: the use of social information in flower-visiting Pallas' long-tongued bats (Glossophaga soricina).

Social learning is a widespread phenomenon among vertebrates that influences various patterns of behaviour and is often reported with respect to foraging behaviour. The use of social information by foraging bats was documented in insectivorous, carnivorous and frugivorous species, but there are little data whether flower-visiting nectarivorous bats (Phyllostomidae: Glossophaginae) can acquire information about food from other individuals. In this study, we conducted an experiment with a demonstrator-observer paradigm to investigate whether flower-visiting Pallas' long-tongued bats (Glossophaga soricina) are able to socially learn novel flower positions via observation of, or interaction with, knowledgeable conspecifics.

Concomitant aberrant overexpression of RUNX1 and NCAM in regenerating bone marrow of myeloid leukemia of Down's syndrome.

Background And Objectives: Myeloid leukemia of Down's syndrome (ML-DS) has characteristic biological features (e.g. expression of the truncated GATA1s), which are different from those of non-DS childhood acute myeloid leukemias (AML).