Results 31 to 40 of about 1,281 (216)

Mate choice and the origin of menopause. [PDF]

PLoS Computational Biology, 2013
Human menopause is an unsolved evolutionary puzzle, and relationships among the factors that produced it remain understood poorly. Classic theory, involving a one-sex (female) model of human demography, suggests that genes imparting deleterious effects ...
Richard A Morton, Jonathan R Stone, Rama S Singh   +2 more
doaj   +1 more source

Reproductive barriers in Serapias x kelleri

Botanical Studies
Abstract Background Understanding the reproductive barriers in natural plant hybrids is fundamental for comprehending mechanisms of speciation and evolutionary divergence. Most studies focus on reproductive barriers and gene exchange material between parental species, whereas fewer emphasize the biological ...
Francesco Carlomagno, Giuseppe Pellegrino   +1 more
openaire   +3 more sources

Reproductive barriers in cassava: Factors and implications for genetic improvement

PLOS ONE, 2021
Cassava breeding is hampered by high flower abortion rates that prevent efficient recombination among promising clones. To better understand the factors causing flower abortion and propose strategies to overcome them, we 1) analyzed the reproductive barriers to intraspecific crossing, 2) evaluated pollen-pistil interactions to maximize hand pollination
Massaine Bandeira e Sousa, Luciano Rogerio Braatz de Andrade, Everton Hilo de Souza, Alfredo Augusto Cunha Alves, Eder Jorge de Oliveira   +4 more
openaire   +4 more sources

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Rasheed A. Balogun   +4 more
wiley   +1 more source

Cytological Observation of Distant Hybridization Barrier and Preliminary Investigation of Hybrid Offspring in Tea Plants

Plants
The undertaking of distant hybridization holds paramount significance for the innovation of tea germplasm resources and the cultivation of superior, specialized tea varieties.
Xiaoli Mo, Yihao Wang, Yahui Huang, Zhen Zeng, Changyu Yan   +4 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Effect of zinc on the intestinal barrier function of weaned piglets

Siliao yanjiu, 2021
Zinc has various physiological function, such as improving growth performance, reproductive performance, increasing antioxidant and immune capacity, increasing collagen, keratin and epithelial layer thickness, and plays an important role in regulating ...
Hui-yun WANG, Yang-kui XIANG, Shu-jun WU
doaj  

S-RNase Alleles Associated With Self-Compatibility in the Tomato Clade: Structure, Origins, and Expression Plasticity

Frontiers in Genetics, 2021
The self-incompatibility (SI) system in the Solanaceae is comprised of cytotoxic pistil S-RNases which are countered by S-locus F-box (SLF) resistance factors found in pollen.
Amanda K. Broz, Christopher M. Miller, You Soon Baek, Alejandro Tovar-Méndez, Pablo Geovanny Acosta-Quezada, Tanya Elizabet Riofrío-Cuenca, Douglas B. Rusch, Patricia A. Bedinger   +7 more
doaj   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Comparative Transcriptomic Analysis Reveals Key Pathways and Genes Involved in Late-Acting Self-Incompatibility in Akebia trifoliata

Current Issues in Molecular Biology
Self-incompatibility (SI) is a key reproductive mechanism in angiosperms that prevents self-fertilization and promotes genetic diversity while limiting breeding efficiency.
Huai Yang, Jie Li, Rui Han, Xiaoxiao Yi, Chen Chen, Peigao Luo   +5 more
doaj   +1 more source