An elongated cell, similar to a sieve cell, that transports photosynthate (sugar) in certain mosses. Mature leptoids lose their nuclei but retain their cytoplasm and have prominent connections with adjacent cells.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。