Scanning electron micrographs: Influence of heavy metal (Pb, Cd) exposure on shell morphogenesis in Astrammina rara, a giant agglutinated Antarctic foraminiferan protist.

This data set comprises scanning electron micrographs of Astrammina rara exposed to sub-lethal concentrations of lead and cadmium. Specimens were shucked (i.e., shells removed) and incubated with metal-free plastic beads for two weeks. Control (no Pb or Cd) and experimental (1 and 5 ug/ml Pb; 0.5 and 1 ug/ml Cd) specimens were prepared for SEM using fixation and dehydration in ethanol (i.e., no aldehydes) and were imaged uncoated at 3keV.

本数据集包含经亚致死浓度铅、镉暴露处理的稀有星根虫（Astrammina rara）的扫描电子显微图像。实验样本先经脱壳处理（即去除外壳），随后与无金属塑料微珠共孵育两周。对照组（未添加铅或镉）与实验组（铅浓度分别为1 μg/ml和5 μg/ml；镉浓度分别为0.5 μg/ml和1 μg/ml）的样本，均采用乙醇固定脱水工艺（未使用醛类试剂）完成扫描电子显微镜（SEM）制样，并以未镀膜状态在3 keV电压下完成成像。