Lymph node of VI group can be stained black by activated carbon particles, and parathyroid gland cannot be stained black. Maybe, parathyroid gland can be preserved by removing the black stain lymph node and retaining the non-black stained tissue.
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. This record was last updated on 07/04/2016 and may not reflect the most current and accurate biomedical/scientific data available from NLM. The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/19558888