Research Article

Effect of Various Pretreatment for Extracting Intracellular Lipid from Nannochloropsis oculata under Nitrogen Replete and Depleted Conditions

Figure 4

Scanning electron microscopic images of morphological analysis of various pretreatment processes. (a) Control, (b) acid pretreatment, (c) enzyme pretreatment, and (d) ultrasonication.
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(a)
536310.fig.004b
(b)
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(c)
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(d)