Results 61 to 70 of about 15,023,284 (301)

The chicken embryo and its micro environment during egg storage and early incubation [PDF]

, 2008
When egg storage periods are prolonged (>7 days), hatchability and chick quality declines. The reason for this decline has been investigated, but is still not completely understood.
Brand, H., van den, Kemp, B., Meijerhof, R., Reijrink, I.A.M.   +3 more
core   +1 more source

Stenospermy and seed development in the “Brazilian seedless” variety of sugar apple (Annona squamosa)

Anais da Academia Brasileira de Ciências, 2014
Stenospermy was identified in naturally occurring sugar-apple (Annona squamosa) mutants with great potential for use in genetic improvement programs.
RAYANE C. DOS SANTOS, LEONARDO M. RIBEIRO, MARIA OLÍVIA MERCADANTE-SIMÕES, MÁRCIA R. COSTA, SILVIA NIETSCHE, MARLON C.T. PEREIRA   +5 more
doaj   +1 more source

Central Cell in Flowering Plants: Specification, Signaling, and Evolution

Frontiers in Plant Science, 2020
During the reproduction of animals and lower plants, one sperm cell usually outcompetes the rivals to fertilize a single egg cell. But in flowering plants, two sperm cells fertilize the two adjacent dimorphic female gametes, the egg and central cell ...
Hong-Ju Li, Wei-Cai Yang, Wei-Cai Yang
doaj   +1 more source

Surface Functionalization Modulates Collective Cell Behavior Near Topological Defects Induced by Topographical Patterning

Advanced Materials Interfaces, EarlyView.
Strongly adhered cells align with concentric circular ridges and exhibit predominantly tangential motion, whereas weakly adhered cells fail to follow topographical guidance and display enhanced radial inward motion. ABSTRACT Living cells establish long‐range orientational order through collective alignment, giving rise to topological defects whose ...
Prasoon Awasthi, Aniruddh Murali, Ellen Juel Pørtner, Adam Cohen Simonsen, Francesca Serra   +4 more
wiley   +1 more source

Studies on the development of anther and embryo sac of Actinidia chinesis cv. Hongyang

四川大学学报. 自然科学版, 2016
The process of anther and embryo sac formation and development in kiwifruit (A. chinese) was observed using paraffin section．The results showed that Hongyang anthers had 4 pollen sacs, and anther wall structure can be divided into four-layer．The Hongyang
DU Yan-Ji, TANG Wei, ZHANG Jing-Rong, GAO Lan-Yang, LIU Yong-Sheng   +4 more
doaj  

3D‐Printed Corneal Substitutes: Materials, Fabrication, and Preclinical Progress

Advanced Materials Technologies, EarlyView.
Successful clinical translation of 3D‐printed corneal substitutes relies on the interplay between the bioink properties, cellular component, and the fabrication process. These factors influence the critical properties of the construct, including optical transparency, mechanical stability, suture retention, that ultimately govern long‐term stromal ...
Shadi Moshayedi, Ashley Vazquez, Alexander J. Choi, Dimitrios Karamichos, Jayoung Kim   +4 more
wiley   +1 more source

Cyto-embryological studies on Astragalus glycyphyllos L. from the areas of northern and central Poland

Acta Societatis Botanicorum Poloniae, 2015
The present paper reports karyolagical investigations on Astragalus glycyphyllos L. from sites in Poland, including development of pollen, embryo sac, process of fecundation, development of embryo and endosperm.
K. Bijok, E. Adamkiewicz, Z. Góral
doaj   +1 more source

A Pentaradial and Bilateral Combined Photoreception System in the Sea Cucumber is Mediated by a Blue Light‐Sensitive R‐Opsin

Advanced Science, EarlyView.
The sea cucumber Holothuria leucospilota detects blue and adjacent wavelengths of light via an r‐opsin with a maximum absorption at 459 nm. In the oral tentacles, papillae, and tube feet, distinct light‐sensing structures with specialized morphologies are formed, constituting a unique pentaradial and bilateral combined photoreception system.
Jiasheng Huang, Chunhua Ren, Zhou Qin, Yimeng Cui, Bingbing Zhang, Peng Luo, Xuan Wang, Yaoqi Xie, Xin Zhang, Aifen Yan, Yang Zhang, Dingding Fan, Yang Liu, Wenjie Pan, Xiao Jiang, Lihong Yuan, Haipeng Qin, David M. Irwin, Chaoqun Hu, Yang Liu, Ting Chen   +20 more
wiley   +1 more source

Embryological studies on Anthemis tinctoria L.

Acta Societatis Botanicorum Poloniae, 2015
The chromosome number of Anthemis tinctoria from natural habitats in Poland is n=9. The development of pollen grains is normal. The embryo-sac is of tetrasporic type and the number of antipodal cells is seven, all derived from one-cellular archespore ...
K. Bijok, T. Pawlak, B. Kreńska
doaj   +1 more source

Mr BMT Achieves Systemic Macrophage Replacement With Preservation of Tissue Homeostasis

Advanced Science, EarlyView.
Microglia replacement by bone marrow transplantation (Mr BMT) enables systemic replacement of tissue‐resident macrophages. Despite persistent macrophage and tissue remodeling across multiple organs, core biological functions and innate immune responses remain preserved, supporting long‐term maintenance of organismal homeostasis and the therapeutic ...
Yufei Xu, Miaozhan Zou, Yunshang Bai, Yang He, Zhihao Jin, Baozhi Yang, Jinjin Du, Pei Ouyang, Yuanyuan Cai, Yuheng Zhang, Bingying Du, Chengcheng Ge, Jian‐an Gong, Xiaoyu Li, Yuanyi Zheng, Jing Ding, Bo Peng, Yanxia Rao   +17 more
wiley   +1 more source