Chest Radiology > Pathology > Atelectasis > General. Atelectasis is collapse or incomplete expansion of the lung or part of the lung. This is one of the most common findings on a chest x-ray. It is most often caused by an endobronchial lesion, such as mucus plug or tumor.
A Labradoodle, a crossbreed between a poodle and a retriever. A crossbreed or crossbred usually refers to an organism with purebred parents of two different breeds, varieties, or populations.
These are purebreds. Similarly when organisms of different species produce offspring with a different genetic makeup, these are hybrids. Purebreds. Purebreds are the result of true breeding where specimens breed true-to type when mated like-to-like.ifference between hybrid and purebred. â¢ Categorized under Animals | Difference between hybrid and purebred. Introduction. In the simplest possible terms, purebreds are the offspring that result from mating between genetically similar parents while hybrids are the offspring that are the result of mating between two genetically dissimilar parents.