Sentence:  <WSD>Cultures</WSD> taken from the jejunum yielded Monilia albicans , Pseudomonas pyocanea , Aerobacter aerogenes , and Streptococcus anhemolyticus . 
Meaning of the word marked with <WSD> tags:  (biology) the growing of microorganisms in a nutrient medium (such as gelatin or agar)