منابع مشابه
Sponges
reference taxon for studying metazoan origins. Like a living time capsule, they may allow us to infer the genome content and cell biology of the unicellular progenitors of Metazoa. For example, comparing choanoflagellate and metazoan genomes will reveal the minimal genetic toolkit of the first metazoan. Pilot studies of choanoflagellate expressed genes have already uncovered homologs of a remar...
متن کاملSuper sponges.
The localisation of tumour deposits by a 131 1 labelled monoclonal antibody to carcinoembryonic antigen (CEA) has been evaluated in 24 patients with primary gastric, oesophageal and colorectal cancer and in 26 patients with clinically suspected recurrent gastric and colorectal cancer. Seventeen of 20 primary sites and 6/15 associated secondary sites were correctly identified by external scannin...
متن کاملAnte-natal and Post-natal Care
glucose thlirapy is call(ed forIt' rar l ese \IIIvt'lee these measures fail, abortioni hias to he iln(luce(l. Ana.stlhsia is e1-r (lamngerous in these cases. (Gas and oxygen sihouldl be chloseln. Results of Treabtne ii t .-Ou)t of 790 patientIs admitted to III \ wards at the Ri)va Maternity HIospital from ulgust, 1988, till tI e end of 198-, tliirteen] cases were admitte(d as hlypercmesis. Of t...
متن کاملSponges for Generalized Morphology
Mathematical morphology has traditionally been grounded in lattice theory. For non-scalar data lattices often prove too restrictive, however. In this paper we present a more general alternative, sponges, that still allows useful definitions of various properties and concepts from morphological theory. It turns out that some of the existing work on “pseudo-morphology” for non-scalar data can in ...
متن کاملPorifera: The Sponges
Found at all depths and latitudes, sponges are among the most ubiquitous of marine organisms. With the advent of modern laboratory and field techniques (e.g., electron microscopy, histochemistry, the development of molecular biology and biochemistry, and the use of SCUBA for collection purposes) our knowledge of sponge biology has mushroomed (see reviews by Fell, 1974; Bergquist et al., 1979). ...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1873
ISSN: 0374-5481
DOI: 10.1080/00222937308680756