L-arginine cellular concentration is increased in arg− and arg−/+argΔSKL compared with WT and arg−/+ARG.

L-arginine cellular concentration in L. amazonensis wild type (WT), ARG knockout (arg−) and the add-backs arg−/+ARG and arg−/+argΔSKL, determined by HPLC analyses of cellular extracts from 107 parasites. Values are the means (+/−SD) of a representative experiment performed in triplicate.*indicates values significantly different compared with WT (p§ and #indicates values with no significant difference compared with WT and arg−, respectively.