Results 91 to 100 of about 339,010 (308)
A pesar del crecido número de estudios que se ha realizado para explorar la estructura genética y filogeográfica en especies mexicanas, hay carencia de estudios para especies de selva baja, zonas con alto grado de endemismo.
Solange Sotuyo +5 more
doaj
Liver organoids: modelling complexity in homeostasis and disease
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley +1 more source
The microbiome in human skin aging
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana +3 more
wiley +1 more source
Characteristics of romantic relationships during adolescence: A review of Anglo-western literature
Romantic relationships are a central aspect of the life of adolescents and have an important influence on the socio-affective and sexual development. This paper presents a review of the scientific literature on romantic relationships during adolescence ...
Elena Jerves, Peter Rober, Paul Enzlin
doaj +1 more source
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
High-precision radiocarbon dating of the construction phase of Oakbank Crannog, Loch Tay, Perthshire [PDF]
Many of the Loch Tay crannogs were built in the Early Iron Age and so calibration of the radiocarbon ages produces very broad calendar age ranges due to the well-documented Hallstatt plateau in the calibration curve. However, the large oak timbers that
Dixon, T.N. +5 more
core +3 more sources
The Mirror in Vedic India: Its Ancient Use and Its Present Relevance in Dating Texts
The major first part of the paper collects as exhaustively as possible all references to 'mirror' occurring in Vedic literature (c. 1200-300 BCE), and presents them with sufficient context in Sanskrit and English in order to show how and why the mirror ...
Asko Parpola
doaj +1 more source
Structural and biochemical analysis of a B12 superbinder
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
A Page of the Poetic Dialogue Between S.A. Yesenin and N.A. Klyuev: About the Dating of the Poem “Beloved Land! My Heart Dreams of...” [PDF]
The article consistently examines the stages of the creative history of S.A. Yesenin’s poem “Beloved Land! My Heart Dreams of...”. For the first time, we reproduce a facsimile of the autograph of the first version of the work (from the album of the ...
Svetlana A. Seregina, Sergey I. Subbotin
doaj +1 more source
Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui +4 more
wiley +1 more source

