Figure 1
![Figure 1. Liver ferrochelatase activity and erythrocyte PPIX levels in wild-type and fch/fch mice of 3 congenic strains. (A) Liver FECH activity in wild-type (▪) and fch/fch female (○) mice measured as zinc chelatase (nmol zinc protoporphyrin [Zn-PPIX]/h per milligram protein). Differences between FECH activity across strains in wild-type mice were not statistically different. (B) Free-erythrocyte PPIX level measured in nanomolar. Data are expressed as mean ± SD of 6 mice per genotype. **Significance of the influence of the fech mutation on each parameter (P < .001).](https://ash.silverchair-cdn.com/ash/content_public/journal/blood/109/2/10.1182_blood-2006-04-014142/4/zh80020706220001.jpeg?Expires=1722761844&Signature=E2iSHtWopCeQt5JrpqHsUk~e7VkxzON18O6n2Iv8g76npJDyE9LJfWB~l2pua2nFNpa-WUBOBUFu5YT1PbsLCaAJ6chtLp4TBpv0dycsYw9MXB1u93-HIsi1dQoxPKnPJd8uz3K-3Li74YT1h4fPDau~80uXPG5v0Y1FVRLcvjmqqaRMG~GbtQyR4Vr~~N~WQK7ZQl8FW6AtIa6dAgBLyVVBF7LGsGT0LJfwMlXpmM5JiuH~0LsE2sNbWzw~mjcX~TLKvDMEZc0Stv7X9kDXHKXitGtPYkyqqSyio8NfvJnVeNqUGAAweWa3AnkIXyZ4wsgL0APc6k5hplXzNpOEAA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Liver ferrochelatase activity and erythrocyte PPIX levels in wild-type and fch/fch mice of 3 congenic strains. (A) Liver FECH activity in wild-type (▪) and fch/fch female (○) mice measured as zinc chelatase (nmol zinc protoporphyrin [Zn-PPIX]/h per milligram protein). Differences between FECH activity across strains in wild-type mice were not statistically different. (B) Free-erythrocyte PPIX level measured in nanomolar. Data are expressed as mean ± SD of 6 mice per genotype. **Significance of the influence of the fech mutation on each parameter (P < .001).
