Heres what we know
Marqus-Torrejn MWC, Southgate B, Alfazema N, Clements MP, Garcia-Diaz C, Blin C, Arranz-Emparan N, Fraser J, Gammoh N, Parrinello S, Pollard SM (2021) LRIG1 is a gatekeeper to exit from quiescence in adult neural stem cells
Here is the conversion: A U-100 insulin syringe is calibrated for U-100 insulin (100 units per millilitre) 100 units = 1ml 10 units = 0.1ml 1 unit = 0.01ml So if your concentration is 2,500 mcg/ml and you need 250mcg, you need 0.1ml which is 10 units on the syringe
Furthermore, there have not been any studies that characterize the effect of P72R, the most common germline single-nucleotide polymorphism (SNP) in the TP53 gene, on mutant p53s response to APR-246