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Description:This 1971 image depicted a Sabourauds dextrose agar slant culture, which had cultivated a colony of Prototheca stagnora algal organisms. This alga lacks the presence of plastids, and is therefore, achlorophyllous.
Under microscopic analysis, i.e., PHIL 10627, Prototheca spp. resemble a fungal organism, and can therefore, be mistaken when attempting to identify these algae.

Similar to the members of the genus Chlorella, but without chlorophyll, Prototheca spp. are heterotrophic, , which means these organisms require carbon in order to thrive, and obtains this nutrient through its consumption of organic substrates.

High Resolution: Click here for hi-resolution image (5.12 MB)
Content Providers(s):CDC
Creation Date:1971
Photo Credit:
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.