Opening of the Pulmonary Vein

An aperture or hole leading into something, especially a bodily cavity.

A response format that allows a respondent to answer using their own knowledge and/or feelings, without specified response categories.

A published specification for storing digital data that is freely distributed and available to be used and implemented by anyone.

Surgery to remove part or all of an organ or a tumor and nearby lymph nodes. The incision is large enough to…

A sequence of nucleotides in that contains no termination codons and so can potentially translate as a polypeptide chain.

Surgery to remove part or all of the prostate gland through an incision in the lower abdomen or perineum (the area between…