Review mast cells and basophils

mast cells vs basophils
https://www.quora.com/What-is-the-relationship-between-basophils-and-the-mast-cell

Mast cells contain a thousand of small granules

mast cells and fibrin (material of scabs)
https://www.ncbi.nlm.nih.gov/pubmed/1387612

mast cells increase blood flow with fibrin which allows the confinement and isolation of toxins and viruses.

mast cells and toxins
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4593748/

mast cells and viruses
https://www.researchgate.net/figure/Mast-cell-activation-in-response-to-viral-infection-Mast-cells-are-classically-known-for_fig1_277780530

Helminth trigger both mast cells and basophils

Basophils contain larger granules with more heparin and il-4 . These bursts can create TH2 and heparin prevents mycobacteria from binding.

basophils contain heparin
https://en.wikipedia.org/wiki/Basophil

basophils and il-4
https://www.ncbi.nlm.nih.gov/pubmed/21270410
https://www.sciencedirect.com/science/article/pii/S1074761314001514