During liver development, hepatoblasts differentiate into hepatocytes or biliary epithelial cells (BEC). The BEC delineate the intrahepatic and extrahepatic bile ducts, and the gallbladder. The transcription factors that control the development of the biliary tract are unknown. Previous work has shown that the onecut transcription factor HNF6 is expressed in hepatoblasts and in the gallbladder ...

The growth of the mouse parotid glands during 7 and 35 days of postnatal life was studied by morphometric methods. The mass of the gland, the volume of each morphological compartment, and the cell number in each compartment were evaluated. The data obtained for each evaluated dimension were adjusted by an exponential equation, of the type Y = a.e k.x, thus permitting the calculation of their me...

The Building America program, funded by the Department of Energy, applies a systems engineering approach to residential construction. The ultimate goal is to improve energy and resource efficiency without increasing the builder’s cost. A key element of the systems engineering approach for most Building America projects has been to improve space conditioning system efficiency by reducing or elim...

The aim of this work was to analyze histologically and histometrically the sublingual gland of mice infected with the RAL strain of T. cruzi, according to the sex. Swiss mice (Mus musculus) were inoculated with 2 x 10(4) blood trypomastigotes of the RAL strain of T. cruzi. In the peak of the parasitemia (12th day) the mice were sacrificed, and the sublingual glands were fixed in ALFAC. HE-stain...

Bilateral duplication of submandibular ducts ending in a ranula was revealed by sialography and confirmed by T2weighted SSh sequence using magnetic resonance cholangiopancreatography (MRCP) parameters. A literature search revealed 2 previous reports of submandibular duct duplication, but a ranula associated with submandibular duct duplication has not been previously reported. A review of congen...

Lens ducts have the potential to couple the output from a laser diode array efficiently into the gain medium of a solid-state laser in an end-pumped configuration. Using a ray-tracing method we investigate different design approaches of lens ducts and demonstrate the possibility to obtain an output beam with a symmetric profile that is insensitive to the small displacement from the output surfa...