cell wall
The rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, most prokaryotic cells and some protozoan parasites, maintaining their shape and protecting them from osmotic lysis. In plants it is made of cellulose and, often, lignin; in fungi it is composed largely of polysaccharides; in bacteria it is composed of peptidoglycan; in protozoan parasites such as Giardia species, it's made of carbohydrates and proteins.
GO:0030312
external encapsulating structure
is_a
SPCC1223.12c SPAC27D7.04 SPAC1F8.06 SPAC11E3.13c SPCC1840.02c SPCC1281.01 SPAC23D3.10c SPAC1006.06 SPAC17A5.04c SPAPB15E9.01c SPCC188.09c SPBC11C11.05 SPBC1289.15 SPAC1F8.05 SPAC1002.13c SPBC359.04c SPAC1A6.03c SPAC26H5.08c SPCC1742.01 SPCC63.02c SPBC947.04 SPBC428.03c SPBC32F12.11 SPBC1348.08c SPAC186.01 SPBC21B10.07 SPCC1795.09 SPBP23A10.11c SPAC977.07c SPBP4G3.02 SPAC1705.03c SPAC1786.02 SPBC29A10.08 SPAC13G6.10c SPBC21D10.06c SPCC63.04 SPAPB2C8.01 SPAC19B12.03 SPAC19B12.02c SPBPJ4664.02 SPBC2G2.17c SPCC18.01c SPBC19G7.05c SPCC306.11 SPAC977.09c SPCC757.12 SPAC1039.11c SPCC1450.09c SPCC1322.10