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22. The industrial production of vaccines against virus diseases of animals and humans involves growing strains of the virus in A) corn liquor, soy bean meal B) plant callus tissue C) tissue cultures or embryonated eggs of animals D) Barley and rice grains E) artificial media supplemented with peptone and sugars 23. A yeast like organism has been isolated from a sputum specimen. The organism, when placed in human serum, forms elongation of the terminal bud. The organism is more than likely A) Saccharomyces cerevisiae B) Cryptococcus neoformans C) Microsporum gypsum D) Aspergillus fumigatus E) Candida albicans 24. Which of the following is not true for microorganisms such as Penicillum, Saccharomyces or Plasmodium? A) have a plasma membrane B) the genome is a single circular DNA molecule C) the genome is arrange in chromosomes D) have mitochondria E) all of the above 25. Conidia formation, which varies according to genus and species, may be observed by means of A) front and reverse macroscopic testing B) direct wet mount examination in 10% KOH C) slide culture examination D) all of the above E) none of the above = identify