TY  - RPRT
TI  - Sieve elements caught in the act.
AU  - Aart J E van Bel
AU  - Katrin Ehlers
AU  - Michael Knoblauch
PY  - 2002
DO  - 10.1016/s1360-1385(01)02225-7
UR  - https://pubmed.ncbi.nlm.nih.gov/11906836/
ID  - 11906836
ER  -