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.
Inbreeding is the mating of (close) relatives. or, mating of individuals with at least one common ancestor. F (Inbreeding Coefficient) = prob. of identity by descent: Probability that two alleles are exact genetic copies of an allele in the common ancestor.