PORTLAND, Maine, Aug. 24, 2021 (GLOBE NEWSWIRE) — ImmuCell Corporation (Nasdaq: ICCC) (“ImmuCell” or the “Company”), a growing animal health company that develops, manufactures and markets scientifically-proven and practical products that improve the health and productivity of dairy and beef cattle, today announced that the FDA has issued a Technical Section Incomplete Letter covering the Chemistry, Manufacturing and Controls (CMC) Technical Section for Re-Tain® (Nisin A intramammary solution).