Store › SiR700-tubulin kit 35 nmol Image 1 of 1 SiR700-tubulin kit 35 nmol $1,184.00 Quantity: Add To Cart Added! SiR700-tubulin is a fluorogenic, cell permeable and highly specific probe for microtubule. SiR700-tubulin is a fluorogenic, cell permeable and highly specific probe for microtubule.