Results 91 to 100 of about 269,983 (194)

Negative spatial regulation of the lineage specific CyIIIa actin gene in the sea urchin embryo [PDF]

open access: yes, 1990
The CyIIIa·CAT fusion gene was injected into Strongylocentrotus purpuratus eggs, together with excess ligated competitor sequences representing subregions of the CyIIIa regulatory domain.
Britten, Roy J.   +4 more
core  

The relationships of the enigmatic gastropod Tritonoharpa (Neogastropoda): New data on early neogastropod evolution? [PDF]

open access: yes, 2009
In this paper, the relationships of Tritonoharpa Dall, 1908, within Neogastropoda are discussed. Tritonoharpa is indeed similar to Colubraria in the morphology of its head-foot, pallial complex, reproductive and excretory systems, in the presence of an ...
KOSYAN A   +2 more
core  

Surgical approaches to adenocarcinoma of the gastroesophageal junction: the Siewert II conundrum. [PDF]

open access: yes, 2017
BACKGROUND: The Siewert classification system for gastroesophageal junction adenocarcinoma has provided morphological and topographical information to help guide surgical decision-making.
Berger, Adam C.   +4 more
core   +1 more source

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