19638
Within the framework of the ASAT initiative ( Assuring Safety without Animal Testing ) , an international group consisting of experts in the areas of thyroid endocrinology , toxicology of endocrine disruption , neurotoxicology , high - throughput screening , computational biology , and regulatory affairs has reviewed the state of science for ( 1 ) known mechanisms for THD plus examples of THDC ; ( 2 ) in vitro THD tests currently available or under development related to these mechanisms ; and ( 3 ) in silico methods for estimating the blood levels of THDC .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None