Abstract：
:Chondrogenesis of mesenchymal cells from the frontonasal mass, mandibles and maxillae of stage-24 chick embryos has been investigated in micromass (high-density) cultures. Distinct differences in the amount and pattern of cartilage differentiation are found. In cultures of frontonasal mass cells, a central sheet of cartilage develops; in cultures of mandible cells, less cartilage differentiates and nodules form; while in cultures of maxillae cells, virtually no chondrogenesis takes place. The same patterns of cartilage are found in cultures established from stage-20 embryos. At stage 28, frontonasal mass cultures form cartilage nodules and the number of nodules in mandible cultures is markedly decreased. There are striking parallels between the chondrogenic patterns of cells from the face and limb buds in micromass culture. The frontonasal mass cell cultures of stage-20 and -24 chick embryos resemble those established from the progress zone of limb buds. The progress zone is an undifferentiated region of the limb in which positional cues operate. Cultures established from the frontonasal mass of stage-28 chick embryos and from the mandibles of all stages resemble cultures of whole limb buds. These contain a mixture of committed and uncommitted cells. Ectoderm from facial primordia locally inhibits chondrogenesis in micromass cultures and this could provide a positional cue. The differences in chondrogenic potential of cells from facial primordia may underlie the specific retinoid effects on the frontonasal mass.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Wedden SE,Lewin-Smith MR,Tickle Cdoi
10.1016/0012-1606(86)90349-0subject
Has Abstractpub_date
1986-09-01 00:00:00pages
71-82issue
1eissn
0012-1606issn
1095-564Xpii
0012-1606(86)90349-0journal_volume
117pub_type
杂志文章abstract：:Msx1 and Msx2 are highly conserved, Nk-related homeodomain transcription factors that are essential for a variety of tissue-tissue interactions during vertebrate organogenesis. Here we show that combined deficiencies of Msx1 and Msx2 cause conotruncal anomalies associated with malalignment of the cardiac outflow tract...
journal_title：Developmental biology
pub_type： 杂志文章
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.2002.0673
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pub_type： 杂志文章
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journal_title：Developmental biology
pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Developmental biology
pub_type： 杂志文章
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1997.8646
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2004.03.043
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1995.0025
更新日期：1995-11-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
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更新日期：2004-06-15 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1993.1265
更新日期：1993-10-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/j.ydbio.2014.05.018
更新日期：2014-08-15 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1998.9165
更新日期：1999-03-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(90)90278-q
更新日期：1990-05-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
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更新日期：1993-06-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
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更新日期：2014-10-01 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2016-06-15 00:00:00
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更新日期：2010-09-01 00:00:00
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pub_type： 杂志文章
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更新日期：2015-01-15 00:00:00
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journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1006/dbio.1996.8472
更新日期：1997-02-01 00:00:00
abstract：:The growing pollen tubes of tomato and tobacco were exposed to electrical fields and the effect on the direction of growth was measured. They responded by turning toward the positive electrode (anode) and gave a detectable response in fields as small as 0.1 mV/tube diameter. The sites of germination of tobacco pollen ...
journal_title：Developmental biology
pub_type： 杂志文章
doi：10.1016/0012-1606(89)90266-2
更新日期：1989-12-01 00:00:00
