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Elasmobranchii is one of the two subclasses of cartilaginous fish in the class Chondrichthyes, the other being Holocephali . Members of the elasmobranchii subclass have no swim bladders, five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins, and small placoid scales. The teeth are in several series; the ...
They and their close relatives, the sharks, compose the subclass Elasmobranchii. Rays are the largest group of cartilaginous fishes, with well over 600 species in 26 families. Rays are distinguished by their flattened bodies, enlarged pectoral fins that are fused to the head, and gill slits that are placed on their ventral surfaces.
In late 2011 the group entered the defense and aerospace market by purchasing a 26% equity stake in SasMos HET Technologies Pvt Ltd. SasMos manufactures interconnection systems (cable harnesses) for various defence and aerospace purposes. [4]
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LAUGFS Life Sciences (Pvt) Limited, a subsidiary of LAUGFS Holdings Ltd., operates a manufacturing facility in Koggala, producing intravenous products, particularly large volume parenteral solutions. Using advanced Form-Fill-Seal technology, the facility manufactures approximately 25 brands of IV fluids in PP Bags under controlled conditions.
These rays invest a large amount of energy into reproduction and only give birth to a few offspring; however, they give birth on a yearly basis. [3] They use internal fertilization which is the process of the male inserting his claspers into the female's cloaca to fertilize the eggs. [ 3 ]
PPD was founded by Fred Eshelman, Pharm.D., as a one-person consulting firm in 1985. The following year, he expanded the company's scope to include development services and relocated operations from Maryland to North Carolina.