Seismic Delineation of Thin Sandstone Reservoirs in a Shale-Rich Sequence Using Instantaneous Frequency and Reflection Amplitude Attributes from 3-D Data, Texas Gulf Coast

1996 ◽  
pp. 48-61
Keyword(s):  
Instantaneous Frequency ◽  
Gulf Coast ◽  
Texas Gulf Coast ◽  
Reflection Amplitude ◽  
Sandstone Reservoirs

Involution and Cystic Transformation of the Thymus in the Bottlenose Dolphin, Tursiops truncatus

1994 ◽  
Vol 31 (6) ◽  
pp. 648-653 ◽  
Author(s):  
D. F. Cowan
Keyword(s):  
Body Size ◽  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Squamous Epithelium ◽  
Gulf Coast ◽  
Bottlenose Dolphins ◽  
Adult Life ◽  
Lymphoid Cells ◽  
Texas Gulf Coast ◽  
Thymic Cysts

The thymus glands of 10 bottlenose dolphins, Tursiops truncatus, collected along the Texas Gulf coast were examined using standard histologic and immunocytochemical methods. The thymus gland of Tursiops persists into adult life, represented by medulla and progressively thinning cortex. A network of epithelial cells, including Hassal bodies, is demonstrable using polyclonal anti-cytokeratin antibody. The network condenses, with loss of lymphoid cells as involution progresses. Cysts arise within the condensed network. These cysts, found in eight of 10 animals, increase in number and size with increasing body size. Body size tends to reflect age. Thymic cysts typically have an irregular shape when small but tend to become spherical as they enlarge. Theey may be lined by squamous epithelium of variable thickness. Eventually, the cysts become macroscopic and filled with a colloidlike material and may largely replace the thymus, which may be identified by noncystic remnants adjacent to the cysts.

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