请检查下面这段话的检查语法错误进行修改和润色修改部分要标注出来：Peripheral blood samples fromof the birth cohort participants were analyzed at in the clinical laboratory within 4 h of blood draw using the Beckman Coulter LH780 Hemat

Peripheral blood samples from the birth cohort participants were analyzed in the clinical laboratory within 4 hours of blood draw using the Beckman Coulter LH780 Hematology Analyzer. We extracted the counts of neutrophils (operating range 0~900×109 cells/L), lymphocytes (operating range 0~900×109 cells/L), and platelets (operating range 0~5000×109 cells/L) to calculate inflammation indicators. Based on these absolute cell counts, we calculated three systemic inflammation indexes: the systemic immune inflammation index (SII) = (neutrophils*platelets)/lymphocytes; the neutrophil-to-lymphocyte ratio (NLR) = neutrophils/lymphocytes; and the platelet-to-lymphocyte ratio (PLR) = platelets/lymphocytes. [26]

修改内容：

1. from后面的of应该删除；
2. 加入了冠词“the”；
3. 修改了“calculate”为“calculated”；
4. 重新排列了句子结构，使其更加清晰易懂；
5. SII、NLR和PLR的缩写需要进行解释，故加入了括号和相应的解释。
6. 在文末加上了引用编号。