Results 71 to 80 of about 4,222,943 (302)

Liver organoids: modelling complexity in homeostasis and disease

open access: yesFEBS Letters, EarlyView.
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

Does the Gravity Model Suffer from Selection Bias? [PDF]

open access: yes
When analyzing bilateral trade flow data, zero trade flows are quite common and problematic when a gravity equation is estimated with a log-linear functional form.
Meilke, Karl D.   +2 more
core  

Occupational segregation, selection effects and gender wage differences: evidence from urban Colombia

open access: yesApuntes del CENES, 2014
This paper assesses the effects of occupational segregation on the gender wage gap in urban Colombia between 1986 and 2000. The  empirical methodology involves a two step procedure where by the occupational distributions ofworkers by gender aremodelled ...
Jairo Guillermo Isaza Castro
doaj   +1 more source

Epigenetic reprogramming of lineage switching in cancer

open access: yesFEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı   +4 more
wiley   +1 more source

Selection-bias correction based on the multinomial logit: An application to the Mexican labor market [PDF]

open access: yes
In this presentation, we illustrate an application of a relatively new selection-bias correction methodology based on the multinomial logit model using the selmlog Stata command (Bourguignon, Fournier, and Gurgand, 2007, Journal of Economic Surveys 21 ...
Luis Huesca, Mario Camberos
core  

Revisiting the home bias puzzle. Downside equity risk [PDF]

open access: yes, 2005
Deviations from normality in financial return series have led to the development of alternative portfolio selection models. One such model is the downside risk model, whereby the investor maximizes his return given a downside risk constraint.
Campbell, R.A.J.   +6 more
core   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

Selection Bias and the Perils of Benchmarking

open access: yes, 2005
To find the secrets of business success, what could be more natural than studying successful businesses? In fact, nothing could be more dangerous, warns this Stanford professor.
Denrell, Jerker
core  

Considerations for viral co-infection studies in human populations

open access: yesmBio
When respiratory viruses co-circulate in a population, individuals may be infected with multiple pathogens and experience possible virus–virus interactions, where concurrent or recent prior infection with one virus affects the infection process of ...
Taylor Chin   +3 more
doaj   +1 more source

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