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. 2020 Nov 26;17:60. doi: 10.1186/s12989-020-00390-y

Fig. 3.

Fig. 3

Lactate dehydrogenase (LDH) activity and total protein in BAL fluid at 3 or 60 days after exposure to a low and high dose of purified and functionalized MWCNTs. a LDH activity. b Total protein. Statistically significant difference to the vehicle control: *** P < 0.001, ** P < 0.01, * P < 0.05, the parent NC7000 sample: ^^^ P < 0.001, ^^ P < 0.01, or to the chemically-purified sample CP7000: ### P < 0.001, # P < 0.05