Table 4. Molecular dimensions of... | American Society of Hematology

Table 4.

Molecular dimensions of individual αIIbβ3 molecules in the presence of Ca²⁺ or DTT

		Head
	No. of images measured	Transverse length, nm^*	Vertical length, nm^*	Stalk separation, nm^*
Ca²⁺
Closed	96	11.6 ± 1.8†	9.0 ± 1.5‡	—
Open	93	11.9 ± 1.9§	8.7 ± 1.4∥	13.1 ± 2.8¶
DTT
Closed	110	12.4 ± 1.5†	8.7 ± 1.2‡	—
Open	123	13.4 ± 2.0§	9.2 ± 1.1∥	18.1 ± 3.9¶

		Head
	No. of images measured	Transverse length, nm^*	Vertical length, nm^*	Stalk separation, nm^*
Ca²⁺
Closed	96	11.6 ± 1.8†	9.0 ± 1.5‡	—
Open	93	11.9 ± 1.9§	8.7 ± 1.4∥	13.1 ± 2.8¶
DTT
Closed	110	12.4 ± 1.5†	8.7 ± 1.2‡	—
Open	123	13.4 ± 2.0§	9.2 ± 1.1∥	18.1 ± 3.9¶

— indicates unmeasurable parameters.

Data are given as mean ± 1 SD.

Ca²⁺/closed versus DTT/closed, P = .027974.

Ca²⁺/closed versus DTT/closed, P = .344849.

Ca²⁺/open versus DTT/open, P = 2.98 × 10⁻⁷.

Ca²⁺/open versus DTT/open, P = 0.033581.

Ca²⁺/open versus DTT/open, P = 4.85 × 10⁻²³.