DETERMINING THE ALGAE CELL DENSITY AND TOTAL CAROTENOID CONTENT OF HETEROTROPHIC MARINE MICROALGAE - SCHIZOCHYTRIUM AND THRAUSTOCHYTRIUM ON THE COAST OF TRA VINH PROVINCE, VIETNAM. tvujs. 2024;13(1). Accessed March 7, 2026. https://journal.tvu.edu.vn/index.php/journal/article/view/71