a detector consisting of a fine wire in contact with a galena crystal; acts as a rectifier

close interaction

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance