28823
Results : The administration of prallethrin 1 . 6 % w / w created significant increased changes in the levels of total WBC , lymphocytes , RBC , hemoglobin , packed cell volume , platelets , mean corpuscular volume , and mean corpuscular hemoglobin in rats after 24 , 48 , and 72 h of continuous inhalation ; however , there was a significant reduction in neutrophils at transient reduction in the monocytes after 24 and 48 h to return to normal after 72 h .
 Chemical: prallethrin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: prallethrin