Table II. Comparison of the Rubisco fraction found in the pyrenoid and in the chloroplast stroma between the wild type and cia6.

The data shown are averages of 25 C. reinhardtii electron microscopy thin sections and a total of 300 particles counted.

C. reinhardtii Strain	Immunogold Density		Rubisco in the Pyrenoid
	Pyrenoid	Stroma
	particles μm−2		%
D66	23.3	0.00	100
cia6	7.5	1.3	35.8