In phonetics, aspiration is the strong burst of air that accompanies the release of some stop consonants. To hear and feel the difference between the aspirated and the unaspirated sound, put your hand in front of your mouth and say top and then stop. The t in top is aspirated; in stop, it is unaspirated.
Alemannic German dialects have unaspirated fortis /p t k/ as well as aspirated fortis /pʰ tʰ kʰ/; the latter series is usually viewed as clusters. Icelandic has pre-aspirated /hp ht hk/; some scholars interpret these as clusters. /b d g/ are normally also voiceless in Danish and most Southern varieties of German. Traditionally, they are still transcribed as <b d g>, even though what distinguishes them from their "fortis" counterparts <p t k> is mainly their lack of aspiration.
Needle aspiration biopsy (NAB), also known as fine needle aspiration cytology (FNAC), fine needle aspiration biopsy (FNAB) and fine needle aspiration (FNA), is a procedure performed to diagnose certain kinds of medical conditions, such as lumps in the neck.
Fine needle aspiration biopsies are very safe, minor surgical procedures.
After the needles are placed into the mass, cells are withdrawn by aspiration with a syringe and placed into a special container.
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