4809
Moreover , further research concerning the functions , effectors and signaling pathways of the above molecules and their interactions , may lead to specifically develop targeted screening tools based on presumptive biomarkers and surrogate endpoints against primary open - angle glaucoma progression and blindness .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None