Ascidian Budding as a Transdifferentiation-Like System: Multipotent Epithelium is not Undifferentiated. (ascidian budding/multipotent stem cells/atrial epithelium/transdifferentiation/monoclonal antidody)
نویسندگان
چکیده
منابع مشابه
The ascidian prophenoloxidase activating system
Phenoloxidases/tyrosinases initiate melanin synthesis in almost all organisms, and are involved in different biological activities such as the colour change of human hair and the browning or blackening of fruit skin etc. In many invertebrates, defence reactions are linked to phenoloxidase activity and/or melanization. Contacts with foreign molecules are able to trigger the prophenoloxidase (pro...
متن کاملAscidian metamorphosis
Solitary ascidians have a long legacy as model organisms for investigating developmental mechanisms because of the simplicity of their embryogenesis and their basal phylogenetic position within the chordates (Berrill, 1929; Cameron et al., 2000; Conklin, 1905; Jeffery and Swalla, 1997; Kowalevsky, 1866; Satoh, 1994). The chordate traits that unite ascidians with the cephalochordates and vertebr...
متن کاملA chemoattractant for ascidian spermatozoa is a sulfated steroid.
Sperm chemotaxis toward eggs before fertilization has been demonstrated in many animals and plants, and several peptides and small organic compounds acting as chemoattractants have been identified. We previously showed that sperm of the ascidians Ciona intestinalis and Ciona savignyi are activated and then attracted toward the egg by a common factor released from the egg. In this study, we puri...
متن کاملstigmata of ascidian tunicates, arranged in paired dorso-ventral columns like the stigmata of ascidian and doliolid
columns like the stigmata of ascidian and doliolid tunicates, while the presumed atria extended far forwards right and left of the stigmata and therefore right and left of the pharynx, as in ascidian tunicates. Furthermore, the atria opened antero-dorsally as in ascidian tunicates, and these anterior openings were paired as in post-larval ascidian tunicates. As a tunicate, Jaekelocarpus probabl...
متن کاملAllorecognition mechanisms during ascidian fertilization.
Ascidians (primitive chordates) are hermaphroditic animals, releasing sperm and eggs nearly simultaneously. But, many ascidians, including Ciona intestinalis and Halocynthia roretzi, show self-sterility or preference for cross-fertilization rather than self-fertilization. The molecular mechanisms underlying this allorecognition process are only poorly understood. We recently identified the gene...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Development, Growth and Differentiation
سال: 1992
ISSN: 0012-1592,1440-169X
DOI: 10.1111/j.1440-169x.1992.00463.x