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There is a page named "Zone of polarizing activity" on Wikipedia
The zone of polarizing activity (ZPA) is an area of mesenchyme that contains signals which instruct the developing limb bud to form along the anterior/posterior...15 KB (2,075 words) - 12:02, 28 December 2024
Polydactyly in stem-tetrapods (category Evolution of tetrapods)called the ZRS (zone of polarizing region activity regulatory sequence) that is located approximately 1 Mb upstream of the coding sequence of Shh." Devonian...9 KB (993 words) - 12:15, 6 September 2024
Polydactyl cat (category Congenital disorders of musculoskeletal system)expression of SHH is seen on the anterior side of the limb. Normally SHH is expressed in an organiser region, called the zone of polarizing activity (ZPA)...17 KB (1,902 words) - 17:20, 15 January 2025
Limb development (section Progress zone model)the zone of polarizing activity (ZPA) with the mesenchymal cells. In addition to the dorsal-ventral axis created by the ectodermal expression of competitive...36 KB (4,234 words) - 05:17, 25 June 2025- (AER) and the zone of polarizing activity (ZPA) with the mesenchymal cells. These signaling centers are crucial to the proper formation of a limb that is...24 KB (2,943 words) - 19:33, 27 May 2025
- Domestication of the chicken)using chicken embryos, such as the discovery of the apical ectodermal ridge and the zone of polarizing activity. The chicken was the first bird species to...70 KB (6,574 words) - 19:23, 28 June 2025
Polydactyly (category Congenital disorders of musculoskeletal system)1Mb upstream of SHH gene has been implicated. Normally SHH is expressed in an organiser region, called the zone of polarizing activity (ZPA) on the posterior...63 KB (7,279 words) - 08:46, 1 July 2025
Sonic hedgehog protein (section Morphogenetic activity)digits depends on the secretion of sonic hedgehog by the zone of polarizing activity, located on the posterior side of the embryonic limb bud. Mutations...63 KB (7,452 words) - 18:46, 28 May 2025
generation of the hand (digits - interdigits): the gradient of sonic hedgehog (secreted inducing factor) from the zone of polarizing activity in the limb...45 KB (5,236 words) - 08:15, 27 June 2025
of bird digits as I, II, III (as in their theropod ancestors) due to the posterior finger's development outside the shh-expressing zone of polarizing...114 KB (12,002 words) - 12:45, 30 June 2025
Acheiropodia (category Congenital disorders of musculoskeletal system)they help an enhancer called ZRS (zone of polarizing activity regulatory sequence), which is found in intron 5 of the LMBR1 gene, interact with the Sonic...20 KB (2,112 words) - 04:44, 2 June 2025
(category Congenital disorders of musculoskeletal system)found in the zone of polarizing activity regulatory sequence, or ZRS, that controls the expression of SHH in developing limbs. Many cases of polysyndactyly...15 KB (1,644 words) - 10:06, 17 September 2023 - Hedgehog family of Proteins)diffusible factor produced by the zone of polarizing activity (ZPA), a small region of tissue at the posterior margin of the limb. Mammalian development appeared...59 KB (6,910 words) - 21:16, 5 May 2025
T-box (section Protein activity)Ultimately, TBX4 and TBX5 lead to the development of apical ectodermal ridge (AER) and zone of polarizing activity (ZPA) signaling centers in the developing limb...10 KB (1,078 words) - 02:06, 8 January 2025
Ultimately, Tbx5 leads to the development of apical ectodermal ridge (AER) and zone of polarizing activity (ZPA) signaling centers in the developing limb...21 KB (2,467 words) - 00:51, 20 June 2025
the expression of Sonic Hedgehog (SHh) to the posterior mesenchyme, which will eventually give rise to the Zone of Polarizing Activity (ZPA). This gene...9 KB (1,078 words) - 02:34, 27 May 2025 - Ultimately, Tbx4 leads to the development of apical ectodermal ridge (AER) and zone of polarizing activity (ZPA) signaling centers in the developing limb...14 KB (1,577 words) - 04:57, 5 February 2025
- article on: zone of polarizing activity Wikipedia zone of polarizing activity (plural zones of polarizing activity) (embryology) A region of mesenchymal
- outer limit of the skip zone varies considerably, depending on the operating frequency, the time of day, the season of the year, sunspot activity, and the
- “The topic is polarizing, scary, captivating. And it’s really easy for everyone to get information that is consistent with their system of belief,” Quattrociocchi
- 60 miles. Auroral activity occurs mostly in a belt called auroral zones, around the geomagnetic poles, between 65 and 70 degrees of geomagnetic latitude