sieve cell


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sieve cell

n.
An elongated, food-conducting cell in phloem characteristic of gymnosperms and ferns, having pores but lacking sieve plates.
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The cartilage was digested for 4h in Dulbecco's Modified Eagle Medium (DMEM, Gibco) containing 2 mg/mL collagenase and filtered through a nylon sieve cell strainer (Falcon, New Jersey, USA) having an 80 [micro]m pore size.
In gymnosperms, a more primitive type of sugar-conducting cell, a sieve cell, performs essentially the same function, although the efficiency of transport is reduced.
In the inner bark of conifers, densely packed sieve cells with minute pores in their walls pass the nutrients slowly from cell to cell.