The periportal red hyaline globules seen here with periodic acid-Schiff (PAS) stain are characteristic for alpha-1-antitrypsin deficiency (a person with homozygous pi-ZZ genotype).
Conclusion: Acetic acid is an important catalyst in the condensation reaction. Schiff bases had antibacterial activity.
结论：乙酸是催化剂，对缩合反应有利，希夫碱化合物具有一定抗菌活性。
3
Complexes of amino acidschiff base have become the hotspot of research in recent years due to their bio-activities, such as antiviral, anticancer and antibacterial activities, catalytic-activities.