Ultrasensitive colorimetric detection of fluoride and arsenate in water and mammalian cells using recyclable metal oxacalixarene probe: a lateral flow assay oleh Shuvankar Dey, Anshu Kumar, Pradip Kumar Mondal, Deepak Chopra, Rupam Roy, Sana Jindani, Bishwajit Ganguly, Chaithra Mayya, Dhiraj Bhatia, Vinod K. Jain